302 heads-Is it worth putting them on a stock 318
I would not bother with the 302s unless you are adding more cam and 4bbl and either have or are going to dual exhaust
If it's otherwise stock, don't waste the time and money is my attitude.
Last time the 67 was together, I ran a 318 one summer. The block and heads were bone stock mid 70's 318. I put a small cam a bit smaller than a 340, it happened to have headers, and the low RPM version of the performer and it was amazingly snappy.