Are there any advantages in swapping out my original cast heads for LT1 heads? Is it possible to do the swap with a carb setup? Is there an intake manifold available for the swap? The heads are reverse flow, so what kind of cooling issues am I going to have with a carbed SBC? I have a 73 SB, and the LT1 heads, at least from the pictures I have seen, look to be a direct bolt on. Am I wrong?