Hello. I have a 1966 Tempest with a 326 2 bbl. I had an older guy tell me that he had a set of number 16 heads off of a 1969 GTO 400 ram air III that I could put on my 326 Tempest. Now I know that most Pontiac engines can use the same parts from 326 all the way to 455. My question is would those heads work on my 326 or would they be to much for it?