I have a tto2r that I was running at a very large competitive race with some of the best drivers in our state I qualified in fifth place and finished in fourth place the car was as fast as everyone else the only downside was I wasn't able to adjust by droop the way I needed to to make the car as reactive as I needed it to be speed wise I was on Pace with everyone I just couldn't keep rebuilding the shocks and putting spacers in them between the runs as the grip levels changed the key to getting this car to run competitively is getting the gearing right you will need a 69 tooth spur gear with a 63 tooth pinion in 64 pitch that is the gear ratio I was told to run on shaft drive and it worked, motor temps are fine. The downside is you have to set the motor mount in the car with one screw line it up then use a long hex driver through the back of the chassis all the way to the motor mount to tighten it then you need to pull it out tighten the bottom screw in the motor mount and the top screw put the motor mount back in the car and put both bottom screws in so it's kind of a pain in the butt but you only have to do it once if you look back in this thread you will see pictures of my car it is a green castrol tt02. And this was with the short tto2 arms I upgraded it to the 419 arms and I was getting quite a few podiums and several wins against some of the top shelf cars I used the Tamaya droop plates on the bottom of the car as they are made out of steel and put the weight as low as it can get I also ran the same chassis in usgt with quite a bit of success this car is all about setup once you get the setup right it's actually quite easy to drive fast good luck you can easily win with the SRX with the droop adjustment and the correct gearing