If you’re doing any porting yourself I would read all the articles you can. There are quite a few, and error on the side of conservative when removing casting. That’s what I did, and only smoothed the seat/bowl ledges in some ports, rounded/tapered around the guide bosses, and gasket matched the intake ports, although the pushrod pinch is pretty intrusive and I’m not sure of the benefits of opening to the gasket there. My 1.92 intake EQ’s did pretty good with my setup, but there surely was room for much better port work, and bigger valves but only by a professional. I stuck to the basics. I have a few pictures the areas I worked over. I spent the most time on the intake bosses and roof in that area contouring as shown in picture looking through the chamber.
