The best factory head that never was

Valves- 2.02 and 1.6 diameter of the X but with the 5/16 stem diameter of the Magnum
340/360 intake port ie X,J,587,596
308 casting exhaust port
T/A offset intake pushrod hole
302 casting chamber sized for 4" bore
Magnum 10 bolt valve covers (less leaks)