You chose the right side of the head to port at least the exhast ports on fords are pitiful for flow, umm word of advise when porting watch out for the exhast cross over right on the ouside edge of the exhast port going to far can be bad, and the air injection port( the big lump in the middle of the port) is the big restrictor in the port so grind it flush with the top of the the port, dont go any farther than you know is safe so if you've never done it b4 find someone who knows and get them to do one port with you so you get hang of it, the rockers are a good idea, there should be no issues unless you've changed cams the you should check for valve clearance best of luck
my 2 cents
sean Kisch
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