well if you dont plan on boosting might as well find some used ctr pistons or something along those lines...i mean buying the si pistons brand new isn't going to be cheap....buy some oem used ones most are still in good condition...try looking into the classifieds bro...well since your in CA go the this website...honda-tech.com....sign up...you'll have to wait a couple days to be able to log on the hondamarketplace.com (this is where you can buy used civic/integra parts)....if you need help just leave me a message and ill get back to you...