magnum head porting / pushrod pinch area / etc

I havent ported a set of Magnums... so take this for what it's worth... What I know of them is they are a high speed port. Small but fast. The issue I see is if you simply enlarge the pinch you may speed up the port more, causing it to go turbulent earlier (at a lower lift). What I would suggest is fit them with 2.02 intake valves and have a 5-angle valve job done. Then blend the throat cut into the bowl, streamline the guide, very slightly lay back the short turn, then gasket match and address the pinch area, working only the roof and shared wall and simply smoothing the radius of the pushrod area. Beyond that, seriously... replace the heads. Also bear in mind the valve job and valves will cost within $200 of what a set of EQ Magnums that will flow better out of the box does. The engine doesnt know what it's in, and a truck can be harder on an engine than in a car. Especially in regard to cracking between the seats.