It would be easy to check if that port size matches the ports on your head (especially if they're already off), however, who knows whether those ports will line up with the openings on your head. The only way to know for sure would be to ask what heads they were matched to in the first place and compare. That said, I am very happy with my (unported) RPM intake, so you'll likely see an improvement regardless.
1967 Galaxie XL, Q-code, 428"
2012 Focus SE (for winter and rain)
1994 Bronco, 5.0L (gone to pasture)
1972 Triumph TR6 (soon to be ford stroker powered)