Late reply here, but the new GT3 is 187-188mm at the top of the wheel openings front and rear. Jaco Blues on a 6mm hex sit about 5mm inboard.

For those running the TCS, GT Pro Spec class. Any recommendations for the number of internal shock spacers needed to achieve a 5mm, 5.5mm ride height with the required plastic shocks?

I used the included 3mm plastic spacers on both ends of the car to get the droop over ride height equal front to rear, and depending on the weight of your car and what springs you're using, the amount of pre-load spacers varies to get you to a ride height of 5mm.

I'm not a TCS racer and still have an SRX in box, what class should I build this up for? Box stock is this best suited as a USGT or VTA car ​​​​​or add some more parts and go full TC?

I do not have any firsthand experience with the SRX, but I imagine it would have the best odds of being competitive in VTA. As speeds increase, and weight is reduced, I imagine it will get less competitive.

I am working on turning a SRX into a VTA car.. the biggest challenge is to get it geared for more top speed, the max Tamiya gears (64/29) are not going to cut it.. I got the TJR parts gear cover delete kit and the Yeah Racing adjustable motor mount.. that way I can get it geared much higher, so at least it can keep up on the straights.. next I’ll have to work on corner speed.. the SRX needs anti roll bars and droop stops.. for me the tinkering is part of the fun.. but out of the box.. the SRX is not going to do well at either VTA or USGT..

I ran a fully loaded type S in VTA. It’s fantastic and super competitive.

In USGT, if you’re in sportsman’s it will do very well. If you grow to be in the mix with experts, then you will need to move up to a better chassis

Check out this link/article about a TT-02S kit that was built before the SRX that was using the 419 suspension upgrade and sway bars. Everything on this kit is Tamiya and would be eligible to race in some TCS classes...

https://www.thercracer.com/2020/03/u...02-type-s.html

There are several aftermarket droop stop options that will work with the SRX kit such as this one made by Yeah Racing...

https://www.yeahracing.com/yeah-raci...t-033-00106030

In TCS you would be able to run it in GT2 or GT1, but you will be racing against fully decked out TAxx/TBxx and TRF cars.. not saying you can’t.. but you are bringing a knife to a gunfight..

Thank you for the tip on the SRX droop stops, just ordered a set!

Dunno.. I enjoy running my SRX+ in VTA.. but I wouldn’t call it super competitive.. on a good day I am at least a couple laps behind TQ.. that said.. at our track VTA with the new Gravity tires are running times that are very close to USGT.. maybe my problem is that we have too many fast drivers out here 😎

Sorry Bud
Raman is right on the money

In GT2 last year at nationals, the 2nd place guy was running an SRX. He thought it would be legal for GT pro spec but since it wasn't, he entered GT2. I was amazed at the pace of it honestly. If he had a proper TA07, heck...even a TA05, I think he could have beaten me easily. He was a great driver.

Did you switch to 64p gears for more gearing options?

Yes - that’s the idea, problem is that the gear cover also keeps the driveshaft bearing in place.. and the big pinions you end up running rub on the gear cover.. that’s why I ended up using the gear cover delete kit.. it is plenty fast at this point, but it leans a lot in the corners.. the droop stops should help with that.. it’s getting there..

The leaning may not be the fastest, but it’s sure darn fun and cool looking to cut up the carpet like that.