Which heads to run on 340

when it was head time for me ... i was at the a swap meet a guy there had w7's for sale he went to w9's 1500$ later i went home with what i wanted heartland sharp rockers stainless valves intake ..... if you figure the cost of valves ,new seats ,springs and all the machine work ... plus all your time running around ... buy a set done from like indy or who ever your money ahead ... your not buying someone else's problem.... just food for thought