Registered: 12/27/06
Posts: 2159
Loc: Waterford, WI
You can't use your stock cat without welding it in.
When you get a DP you either get it with a high-flow cat or no cat at all.
Yes, the U-bend delete is included with the 3" DP w/ cat.
_________________________ http://s4.photobucket.com/albums/y130/venomman/ "If you are asking if you can do it, you can't. When you have learned enough to know that you can do it, you are able to." -me
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