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Old 01-08-2015   #1
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Join Date: Dec 2014
Posts: 4

88 GTA 5.7 Catalyst flange size

I have an 88 GTA, want to put in a Flowmaster catback system, does the GTA have a 2.5 Flange on the Catalyst or 3 inch. FLO17234 or FLO17233, ive heard the GTA comes with a 3 inch flanged Cat.
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