Keep your heads and PORT them man!!!!!!! All you need is a base head to work with for your application. I believe you would be very happy with some race porting on those Holley heads. My heads flow 340 cfm and they rock! Save your money and port them.
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My CAR IS GONE R.I.P----I miss YOU  331ci, 69 Windsor heads ported and shaved , Trick Flow-Intake ported,JE blower pistons, Custom cam 542 lift, 1.73 rrs, Equal length headers, BBK Hi-Flow cats, Hurst shifter, 3:73 gears, Tremec 3550 tranny,Lakewood drag suspension-90/10 in front and 50/50 in the back. Lakewood traction bars. Edelbrock 70mm tb, K&N filter, Kirban fuel reguator, Custom sub-Frame connectors,83 lb squirters, powerdyne blower with 12psi pulley,
http://www.pumpoperators.com/brian/
Rice Haters Club Member #82
My wife is AWSOME!!!!!!!!
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