I have the 2.5" X Pipe on it's way, so if I only have to upgrade the Flow Tubes and Mufflers, that would be great it the Tail-Pipes are 2.5" ?? My tailpipes are in excellent original condition..........
I don't have stock tailpipes any more, so can't measure, but I think the steel part that goes over the axle is 2.25" and the polished stainless part that exits under the bumper is 2.5". Just take look at your current stock system and verify.