I was wondering if flowmaster sells an 80 series muffler with one 3 inch inlet and 2 three inch outlets that would fit my GTA...if so where can i find one for the best price....thanks a lot buds....D-rock

 

www.summitracing.com or www.jegs.com
if you cant find it on there call either place, I would rather do business with Summit, and ask them if they have one and the deminsions on it. If it is close to your stock size it will work. It might not be a direct bolt in, but a good muffler shop will be able to make it work.
Flowmaster dies make custom muffelers for street rods and other things so you can basically get anything you want as far as size in size out. Though I have never heard of 3" in dual 3" out, but they might have them. To get it you might have to go through Flowmaster directly which will cost you more because they make deals with their dealers that they will not under price them, that way Summit knows they can sell the mufflers they stock.

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89 Trans Am Turbo 3.8L All stock 43,000 miles #1053 of 1555

Past Thirdgen:
86 Trans Am w/ built 355TPI with SLP goodies and too much other stuff to List. One sweet *** car, wish I would have had a good enough Job to pay insurance on three cars so I could keep it, but for a 89 Turbo Trans Am w/ Low miles, I think I made the right choice!

 

Yes they do, I have one. They also come on their AT exhaust kits.

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'88 IROC TPI 355, '69 truck 4-bolt, fully balanced, 9.75:1 compression, fully ported '70 truck heads(for now), Harland Sharp 1.6 Roller Rockers, Comp Cams CS 252AH-12, ported '86 TPI converted to speed density, Crane AFPR, Flowmaster 3in. exhaust, Edelbrock TES headers, all emissions equipment is still intact, plan on burning my own chips, many more mods and parts on the way as time and money permits =(
Best E.T. with TBI 305: 16.11 @ 82mph
Haven't been to track with new motor
If you have any questions on converting from TBI to TPI email me at jdkchevy70@yahoo.com
In memory of Dale Earnhardt, I'll miss cheering for that black #3 on raceday!!!

 

as far as i know the biggest one that they make is 3" in, dual 2.5" out, thats what i have on my 91, i just had my shop use 2.5" to make the elbows, then they welded 3" stainless on at the turn, out to the back,