Mike,
Nice truck...I just recently pulled out my 216 out and put a 235 from a 57 in it. My 216 was very tired. I wanted to rebuild it but was suggested to find a 57 -63 235. Lucky I came across one already rebuilt. My wife said since we are putting in something else to do it right...So I got the go ahead to put carters, fentons dual manifold and fenton headers...I topped it off with glass packs...Runs great now. Now just waiting on rear end parts from Patricks so I can drive faster than 45.