Friends who have done it. well, minus the bigger throttle body! they used the jdm ctr pistons with the .25 overbore. the bored out to .05 overbore. only reason why i know all of this stuff is because he was using my computer to order the stuff so that his girlfriend wouldn't find out. he just won't show anyone the dyno sheet. but that car run great, when it was a stock ITR i was able to beat him with my lsvtec more than once, now i have to build up my lsvtec to keep up with him!!!