Heres a link to a thread i started when i did my head, theres loads of good advice on there from Perry and others.

My inlets are pretty much standard size and shape with casting marks removed and valve guide cut back, gentle reshaping behind the valves to get rid of any nasty steps. My exhaust ports IMO are far too big, they were opened up at the manifold end to match to my exhaust manifold, the size right by the valve is still too big but not too far from standard, the port roof was raised, Perry tells me this didn't improve flow in his head so it was probably a waste of time. The pics aren't too clear but the throat is a similar square shape to Karls NMS head and others.

https://passionford.com/forum/ford-e...started-2.html

Rob,