Some basic aftermarket dual plane manifolds are basically the same as your cast iron intake, only lighter aluminum.
Edelbrock performer or performer RPM (this sits slightly higher than stock) would be my vote for a stock motor.
Or just my , since there won't much be a noticeable difference. Just put a 4 hole spacer between your iron intake and the carb for some added throttle response and some power gain?
anyway you go, good luck. SP would be a step in the wrong direcetion though.
, since there won't much be a noticeable difference. Just put a 4 hole spacer between your iron intake and the carb for some added throttle response and some power gain? 
