[gstjoker]

It's a cat. elim. downpipe. It's 2 1/2 at the front where it's bolting up to the o2 housing and it goes down to a 3 inch to my buschurracing catback which is 3 inch also. It does bolt up but the size of the flange don't match up pefectly. I'm just curious as to if this will be causing any problem, that's all.