OK my dad recently got kooks 1 3/4 long tube headers, a corsa touring exaughst and corsa Xpipe. Finally went and had then installed, and they didnt fit:bang Corsa pipes went in fine, but the kooks headers were to long for the catylac converters(sp) according to him? Did he need a kooks xpipe? help us out please. All things were order from zipproducts. Its a 05 C6 btw.