cleaning up the slant six head

I did the head many years ago, never seen a flow bench, did it by feel and look......port matched.
I had it on a slant that was 0.060" over, mild cam, headers, 2 & 1/2" exhaust, Mercury Turbo muffler, 2bbl intake, 350 Holley, regraphed (points) dizzy, Bosch GT40 coil, 14" open aircleaner, heavy duty clutch, BW 4sp close ratio box, 3.45 gears.....and would leave a 1973 XA Ford GT 351C Hardtop behind, and would run out at 120 mph.
Tried it on a drag strip, street tyres let down to 18 psi, and all I could get was a 16 sec 1/4 @ 89 mph.....was spinning into 3rd gear.....but on street asphalt, whole nother story.
Thanks for the info, too be honest with all the feedback I have been reading unless I am building an all out high RPM race engine ( which I am not ) spending an ungodly amount of money paying someone to do the head would be a waste of time/money. My engine will prob never see over 4500 RPM on its worst day.

I think I will go the route you chose to go, if you ever have any spare time and any tips you would not mind sharing my e-mail is [email protected]

Either way thanks for the pics, it looks like you did a great job.