Here is the procedure you'll be asking about next.
http://www.grandprixforums.net/how-i...hod-44126.html

You want to go on Frozenboost.com and buy 2 2.25" and 2 3.00" exhaust band clamps. They are about 1" wide.
Gaskets..reuse your stock manifold to head gaskets. Use the one they gave you for the catback connection.