Worth the trouble?

thanks. im not looking for "things that sound cool" im looking for all options.

i asked before but what about an offenhauser dual plane intake? its not an airgap but will that work?

i also thought about milling the head as well. itll be a week or two til i get home next. between school and work i dont have a single day off. ive worked a constant 16 days now. but hopefully i can get home to the 72 duster. and as suggested ill get a compression test to report back with. i was thinking about giving sam jones a call. he owns a shop in the washington area and does performance engine work as well as head work for alot of the nextel cup cars.
hes pretty well known around here. maybe he can add more light to what i should/shouldnt do to my heads or block.