I have a 1987 W150 4x4 with: 727Trans , Dana44Ft(Auborn Heavy Duty Posi) ,9.25 Rr(Auborn Heavy Duty Posi) , 4:10 gears. 1981 318 cid, 2bbl ,Headers(3" collectors), H-Pipe, Flowmaster 40's, 2.5" Exhaust Pipes, 32x11.50/15 Bridgestone Dueler Mud-Terrains on American Racing Baja Rims. 
This is what I have and want to add: Reconditioned Heads (308 castings, 4 angle valve job ,stock size valves) - Mopar Performance cam #4552759 (Dur: 260/268 Lift: .430/.450) - Edelbrock Performer - Edelbrock 4bbl Carb.
How is this combination? Does anyone have something similar for comparison to give me an idea of performance? Thank You. Jimmy.
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This is what I have and want to add: Reconditioned Heads (308 castings, 4 angle valve job ,stock size valves) - Mopar Performance cam #4552759 (Dur: 260/268 Lift: .430/.450) - Edelbrock Performer - Edelbrock 4bbl Carb.

How is this combination? Does anyone have something similar for comparison to give me an idea of performance? Thank You. Jimmy.