Any engine swap will put you in a modified class which basically means that you (and your competitors) can throw just about any modification they can afford at their car (short of major bodywork, massive fabrication and whatnot). Competition is stiff in mod, and you'd need to do some thorough work to most of the car in order for it to be up to snuff. If your main goal is to be competitive, stick to stock classes. If your main goal is to have a tricked out car, a daunting (although possible extremely rewarding) challenge, and you don't mind forking out the $$$, then swap away.:thumbup: Its really your choice.... I personally have gotten sick of driving a slow-ass shitbox, and have decided to swap also and move on to bigger and more ex$pensive things. So I understand all that.

B.T.W. non-factory turbo systems and autocross generally don't mix. If youre trying to pull out of a corner and find nothing but lag when you hit the go pedal, its very slow and very frustrating. I wouldn't bother with the turbo, and instead just do the LS, gs-r, or b20 swap.