A better choice would be the 53CC head for a mid-1980's 305 with slightly larger exhaust valves fitted. Use a 1.6" exhaust, regrind the seats to fit them, and do a little pocket porting.
14022601 — 1980-1986 267 or 305, 1.72/1.5 or 1.84/1.5 valves, 53cc chambers
64CC heads are scarce and expensive, and if you have a set, why not sell them to some Kool-Aid drinker who thinks they're the best thing since a pocket on a shirt? You'll make enough money to buy a set of 305 heads and set them up to get much better performance and higher compression, plus put a little profit in your pocket. Those heads will also have the accessory mounting holes for a later-model alternator and power steering, A/C, etc. if you want to install them.
Jerry
