I have a 95 s/c riv. Its pretty peppy stock. Make sure theres premium in it, always or it will definatley knock. Dont forget to change the supercharger oil too if you have not done so. I bought mine with 60k and did it as soon as i bought it just for p/m As far as performance wise. You could order a smaller pulley, change the stat, and plugs, and possibly have the PCM flashed. Check out rivperformance.com. Theres alot of helpful advise there. I found a smaller pulley for mine at the junkyard. Went from 7-8lbs. To 12lbs with a home made cold air kit and that pulley. Running premium and no audible knock heard. Car pulls really good. Although take it easy, as you probably already know, that trans doesnt like to much thrown at it. Just my 2 cents. Good luck and have fun.