Club327, I just saw your post this morning, didn't have time to reply to it then, But when I swapped out my 350 for 327 in my camaro, I used the stock heads that came with the engine and the intake from the 350 I was pulling out of it, Engine ran great, had enough power for me, Not quite sure what exactly it was running as far as HP, but I do know I could break a brand new set of tires loose taking off, and from 1st to 2nd, and I do know that I could do a "brake stand" until I couldn't see from all the smoke. I guess it all depends on what you want and how much you are willing to spend. Me I would look more at going as much stock as possible for a daily driver, if you want one for racing then you will need to look at the pocketbook to see what you can get.
But I am a firm believer in stock, after all GM has more money than me to test what works.