yeah u guys are right i should take my car building slow, u know do it the right way first. I'm going to get the high flow cat, but i do have a question. With the carsound high flowcats do they make the cats to bolt right up or will i haave to find someone to weld flangs, because i really would not like to do that. If u guys could also leed my to the right website to maybe buy one off of, that would be cool, thanks.