The ones that expand or bell out to 4" do so after the pinch weld so that they will go right into a 4" exhaust. Since they are 3" from the turbo down to the second section there is no more of a problem fitting them than a straight 3" one.
97 downpipe
So I see a ton of aftermarket exhausts for sale for my 97 f-250. I can get a 4" or a 5", but the downpipes are all 3". My question is can you fit anything bigger than a 3" downpipe on this year of truck?
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Give Dale at Tymar Performance a call at 509-922-8785. He doesn't have a web site but is one of the best out there and he'll take care of you. If he doesn't answer just leave a number where he can get ahold of you and he'll call you back.
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