Hey guys, I have a quick question about my 80 series flowmaster. I think i read on here somewhere that internally the 2 1/2" inlet 80 series is identical to the 3" inlet 80 series. Anyone know if this is true? I'm just wondering because i have the 2 1/2" inlet now, but want to get a 3" I pipe. I figure i could just cut off the old inlet and weld a new 3" inlet on. Will this work? Thanks.

im thinking it will work just fine. because yours steps up to 3" before it hits the muffler

Yeah they should be the same case, so the internals should be the same.

Sweet. Gotta get me a 3" I pipe now.