an S2000 would be a good car to mod, and they can look awesome when done properly.
But be warned, they are horrid to drive. I had one for a 24 hour test drive, and just couldnt get into it.
If you drive a turbo car, you always get the warning that the car is gunna come on boost. But with the VTEC in that thing, there's no warning. Going round a roundabout in second, I really had to pay attention to the revs, otherwise the VTEC kicked in, and the back end stepped out.
Now, I dont mind some sideways action. But only when I want it to!
You could get a supra for sod all at the moment, and mod the hell outta it. The engine is so over engineered it can take a hell of alot of power on stock internals