Once again he's not going to be autocrossing, he's going to be road racing. Setups for the two are very different because the courses you drive on are very different, it's that simple. Secondly, labor on a swap without taking apart the motor and messing with the insides will usually top out at $1000. Couple that with the fact that in a hatch you don't have to deal with the power steering, ABS, etc and it's relatively simple. I figre to accquire a hatch and have a B18C swapped in will run you about 6 grand. It's pretty tough to find a GSR with a solid motor for 6 grand. With either car you still need to deal with the chassis preparation and the associated costs will be about the same.