best head for 318 street car

Heads like the RHS would be a big step up, but they cost more money. Better port, chamber, new castings. Figure how much it will cost to refurb a set of old castings and see where you land.

I agree with Cracked on this a lot! I went the OE head route due to the fact is you have them. Talk to the machinist. Look at the big picture in cost.
IMM can quote you a price shipped to your door and you can weigh it from there.

I used to deal with an old machinist for a long time. He mills both my heads for $35 bucks down .060 and we have lunch watching I love Lucy. :cheers:
Other guys I have met say "It's a hundred a head for .030."
I'm saying how much of a cut are you taking!?!?!?!?!? :thumbdow:
His son does my valve seats and guides etc... cost, peanuts. So sometimes, I forget my great deals and forget others pay a good bit more sometimes.

I just dont see a big worth in swapping heads you don't have in favor of a set, brand new at that, which has a merit worthy of purchase unto itself, always a justifiable thing to do and even more in what I think your trying to say here for your build.

I tend to error on the side of caution and a lean wallet. I'm a bit from the poor boy school of hot rodding.