i came on here a few days ago testing the waters on this site to see if people are serious about there cars,i posted a few threads and got bashed because of who knows.i work at crower and do majority of the import line,we have great parts and some people tend to think other wise like people who bash certain companys everybody has there pick,the y8 stage 3 full race set up we have in stock and runs $315.00 and you would need the spring and retainer kit which is $292.37 also carry steel retainer which is cheaper in price.also take your stock core and regrind it to stage 3 specs