I have seen this done before, A nice clean swap, the 4.3 can look very nice in an RX7. I think the Vortec 4.3 made 260 lb-ft of torque which is a significant step up from the 200 lb-ft that my NA rotary makes.
What kind of fuel mileage do you get?
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1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers)
1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)
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