I am in the process of buying a used Stillen y-pipe from another .org member but it does not come with gaskets. I have a 97 with 50k on it and I need to know what kind of gaskets I need, where I can get them, and about how much they are. Do I even need to replace the stock ones? Thanks.

 

go to www.cattman.com and look for the yg4 gasket set. they are like $10

 

you dont really have to replace the cat gasket but you must replace the 2 crush rings that go to the manifolds. The cattman set comes with all 3