I would change the camshaft to fomoco part A 443 .Check the size of your carb,min 750 CFM to 850 would suffice.Make sure you get the 7/16 rocker arm studs with the 7/16 guide plates and hardened pushrods .Rocker arms [1.7 ratio] would be your choice , roller tips or full roller .Also get dual springs if you have single springs with damper springs only.Seat pressure should be min 130 pounds to 300 open ,to control valve float.you'll have over 400+HP.