[charlez13]

if you are planning on running higher boost than stock on the xs kit, i would strongly recommend stronger (forged) connecting rods and pistons. You can get both from www.monkeywrenchracing.com . You can have the pistons made to any comp. ratio you desire, lowering the CR will allow you to up the boost a little more, however, you will need to find someone that is very competent in tuning the PowerFC unit that comes with the XS kit. If you are seriously considering this, I would start by getting the normal XS kit running correctly first, and go from there.