That sure gives me something to think about. Would kind of like to keep it an HO motor and from what I understand, the heads are really the only thing that makes it an HO. Cam, dist, carb all can just be swapped out. The heads are currently at the machine shop waiting for disassembly and evaluation. That will tell me a lot. I'm not building a street racer and the knowledgeable ones I have talked to all say R/R the heads to include hardened seats and if a stay with a stock HO cam grind and keep the timing to factory specs, I should be fine. Just don't get greedy for HP and go for more timing. Like most, I am on a budget and the fact that a 69 350 HO landed in my lap has me excited. Thank you for the advice, I will consider it pending the evaluation.