ok so i bought a type r exhaust, and for some stupid reason, the flange connecting it to the cat, it like 1 or 2 mm wider that the one on the cat. what can i do about this? i cooould put a smaller bolt in, to at least hold it together (the full size bolts wont fit), but would that create leakage? can a shop fix this?

 

ghetto rig it...hack off the flange, get a reducer and a couple clamps