How does this combo sound?
Hedman Hedders.
3" Hedman Y-pipe.
3" High Flow Cat.
3" Intermidiate.
Flowmaster 80 series.
2.5" Trans Am tips.

 

go with a 2 3/4 inch pipe. 3 inche pipe is too big for our cars sounds choppy

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Steve
88 Firebird TBI(WS6),TH700R4 - Open Element, Catco 2 1/2 High Flow Cat, K&N filter 14*4 element, American Thunder Flowmaster Catback Exhaust, 180 Stant thermostat, Accel cap and rotor, L98 cam

 

sounds fine. Are you sure the rear TA pipes are 2.5"? The ones from a '99z28 were only 2.2"

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship :
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz



Got Beach?

 

wuts wrong with 3" pipe?

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- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series