If i remember right the GTB has a fan on it. If so it is too high to fit under the body of a 1/12 scale unless someone on here has found a way. I know several guys at my local track are using the Sphere system and the other Novak controllers though without any problems.

You could go ahead and get the controller for brushless that allows you to run brushed motors. Just get your feet wet in stock and then try the brushless system.

As for the rest of the gear, smaller is better. There is not much room for equipement and weight is a factor. Try to place as much of it as close to the centerline as possible and go back a few pagers on here and see how some of the guys have routed their wires. It can make a difference in handling as I have gone back and rewired my car and have noticed an improvement.

I'll give a plug for the CRC T Fource as your first car. Others will caution against a tbar car because the tbars can break in a sidways hit. This is true, but I have seen too many guys new to 12th that struggle with a link car because of the learning curve on setup. When I see a new guy with a T Fource, setup using the side springs, they are much better and struggle less with handling.

I have had my car for two years and have not broken a tbar yet. It's not that I dont hit anything as I have had some bad ones and broken other parts, but the tbar is still in good shape.

Whatever car you get, upgrade the front axels to titanium and spend time making sure the front suspension is free and smooth.

Good luck.

Greg