The outlets on my stock 69 exhaust manifolds measured only 1 7/8 inches. I don't think your car can breathe. As for the rear end, what kind of car are you looking for? Highway cruiser or dragster? Shorter rear end would help in acceleration off the line but make things busier on the highway. 3.23 or 3.55 would be good middle ground choices. Are the Gardner pipes 2 1/4? They would with different downpipes hook up to some Ram Air III manifolds. Look to spend some more money. That you can count on.
[ May 15, 2002, 02:11 PM: Message edited by: David Jones ]
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frittering and wasting the hours in an off hand way....
1969 GTO, 455ci, 230/236 Pontiac Dude's "Butcher Special" Comp hyd roller cam with Crower HIPPO solid roller lifters, Q-jet, Edelbrock P4B-QJ, Doug's headers, ported 6X-8 (97cc) heads, TKO600, 3.73 geared Eaton Tru-Trac 8.5", hydroboost, rear disc brakes......and my greatest mechanical feat....a new heater core. 
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