The problem with these heads was that i was STUPID and sucked a valve, broke a block and beat the sh*t out of that combustion chamber.
required intake and exh seats installed to save the head.
The seats left a ski jump in the bowl. Remove the ski jump straight down the bowl.
In other words there was not a 70*cut. straight down from the seat.
short side was smooth......and rounded. nothing done past there.
Made plastic tempest and made all the rest of the ports match then two.
Edit: stock valves, only combustion chamber work was to remove all the scares from the valve head beating around on that combustion chamber