Is that the Hyrax?!
In my experience, thus far, and outside of the Bwoah, the only LMH body that will properly mount on a TT-02 is the new Bitty 499"T"
The vast majority of the LMH bodies on the market are only compatible with the modern ultra low profile TC chassis that have the shock mounting positions below the the level of the tops of the wheels.
Even my TA08Pro required custom shock towers to get the Hyrax at proper height.
My friend, you were either lead astray, or boldly leaped.

🤣

I had my suspicion it was going to be an issue on the TT02 and considered getting the 599R.. but I am a Porsche man, so I picked up the P963 which I had planned to decorate with the 1997 Mobil 1 livery. I tested it on my TRF421 and the rear body posts remain an issue.. vertically they sit right at the start of the fender curves. Horizontally you need one of those internal drop down carbon mounts. Need to figure out which one.

What about the Montech range?

I looked into SSBB shock towers. Most have the eyelet for the body post. if those were deleted, the body could be dropped an additional 8 to 10 mm.. which would be passable. For rear body posts, you could use the spare bumper on B parts.. and use vertical body posts.

I can't speak to ALL of them, although Montechs marketing does specify "can be mounted on all the latest generation Touring Car chassis".

Its possible there might be a few that happen to clear mechanics of the good'ole TT-02, but I wouldn't bet money on it.
All I'm saying is that I know for a fact that the Hyrax won't clear the shock towers of older design, and thus far, Bitty has been the only company to precisely specify that their LMH 499 "T" body will fit the TT02 without modification or creative tinkering.

Bitty did right to build a TT version of the 599. Maybe they will follow up with the other releases that are coming, eg. Aston, Toyota et.

I asked Bitty about a Porsche 963.. they said they had no plans to do a Porsche..

The track in my area that run LMH are quite big. So the 25.5. motor doesn’t inspire me to dedicate a more advanced chassis to this class.

I picked up the hard chassis this week and was planning on moving everything over and at the same time switching out to hex hardware. I picked up this 520pc 'RC screw kit' awhile back and realized I have most of the screws I need to do it already. Amazon's delivering the suspension pins today, so don't have to worry about those funky screws. So far, the only hold up are the 3x15mm screws that hold in the bumper plates.. I've got some 3x16mm, but is that extra mm going to be too much? Should I be safe and go pick up a few 3x15mm machine screws instead? Don't have any of those hex head screws either but eh those are only for the body posts and the front spindles so I can leave those I guess.

I was about to get started at like 6:30 this morning since I was awake but ran into that while I was looking through the manual and comparing what I had available heh. Didn't want to ruin my new $8 chassis haha.

If the bumper screw is too long, it can create a dimple inside gear box which will rub on the diff ring gear. To be safe you can put a 1 mm washer on the 3x16.

Haha perfect, got a whole bunch of blue AE 1mm and 2mm washers ready to go. Don't want to risk messing up my oil filled diff and coupler! Ordered a pack of various socket head hex screws too, so now I got the hex head screws covered, those should be here tonight at some point.

Now I got my 3mm and 5mm shims, hard chassis, and a fresh pack of USGT tires (TQ RC was out of the belted ones ). Time to switch over the chassis, get rid of the remaining slop, and go back through and make sure I loctite everything that needs to be this time just to be safe.

Just discovered the Cal Raceway down in Orange last week too. Might have to go pick up a 911 GT3 R body now so I can get some practice in their Porsche class before the TCS at Revelation next month heh.

can a base tt-02 be converted into the tt-02 srx? if so is there a kit to start with or a list of what parts would be needed?

I actually have all the pieces to convert to the SRX, I started to do it then I put all the original TT02 parts back on. I can sell you what I have including the suspension arms, c hubs and knuckles from a TRF419.
dm me and I can send you pics of everything.

Not sure if you are running on asphalt or carpet, but the USGT tires we run on asphalt and the belted USGT tires we run on carpet. If you need the belted ones for carpet, drop me a PM, I have a lot of them.

Ahh I figured maybe the belted ones were just a little 'tougher' and lasted longer? I really wanted the grey edge wheels, but the black ones don't look so bad haha.

This will be all asphalt. I honestly don't think there are any carpet tracks anywhere near here in So Cal, indoor or outdoor. Even Tony's Hobbies, the track is inside the back of the warehouse, its all dirt (but now they wont let you run anything but slicks on it, all my Hole Shots down the drain heh). Its nice for me, I'm old school and like my off-road buggies in the dirt and my TT-02 on a real track.

Should be (mostly) possible, but certainly not worth the money, I'd say.

It's possible. If you really want to do this, go to Tamiya's website to look up all the option parts the SRX offers, and source those parts individually. However, it's much easier to just get the SRX kit and be (mostly) done with hopping up the car.