I picked up a Magnaflow cat back from Craigslist. The guy had it on his Terminator and switched to a Borla. I had it installed today in my 99. They called me from the shop saying they had to cut the pipes to make it fit as the tips were coming out too wide and pushing up to the outside of the bumper on both sides (not lining up close to the cut outs). I am really perplexed by this as I understood it would fit. To my knowledge the cat back is the same for 99-04. Any thoughts as to why it wouldn't without cutting it? I wouldn't care except you can see the pipes from behind, as you all know.