Forced Induction is the way to go if you don't want to spend too much or build the engine to an extent that it's worth more than the car itself, turbo or supercharger will work nicely and to keep the boost at 6psi or so will get you a pretty quick del sol, well with the proper tuning of course. and this is using stock internals, Depends on how much you want to spend really. I turboed my p5 and it kills M3's and STI's i love it.
what boggles my mind for a sec is that I thought del sols come with sohc v-tec motors
Shift2