I got a friend with a 91 CRX that has an ITR engine in it and some headers, light weight pulleys and polished port, as well as intake, and exhaust, and some other things like a racing chip and a racing pipe, but no supercharger or nitrous..and beats the hell out of Mustangs, Camaros and some other muscle cars in the tracks..I think your choice would be doing an H22 swap and do some work into it or go with the supercharger and see what happens