My preference is a used '90-'92 Plymouth Laser RS (turbo). They cost anywhere from $500 with problems to $1500 in perfect running order. They run 14's already, and have a nearly unlimited potential to go faster. They never need sleeves or an aftermarket turbo kit, and can make over 400hp before you have to disassemble or re-assemble the engine to make more power than that.

But to make a Honda that you already have go faster... Nitrous is the only way to go without changing what's under your hood... at least if you want to feel the difference on your butt-dyno.