why not just go 13b?
the only problem w/ 510's is that they weren't designed to handle massive hp. you basically have to change out the whole suspension, drivetrain, brakes.
so basically, is it worth buying a car to keep maybe just the chassis, or drive a car that was meant to handle <100hp?

Over here in australia, the 13b, 20b, sr20, and fj20 are popular choices for the 510. but I'll tell you it's takes more than just hp to be fast. btw, they launch like shit.