Hello, I have a 1967 Nova with a 454 big block and 074 factory ZL1/L88 aluminum heads and an Edelbrock 2-4 intake. I am planning to swap to a ZZ502 crate motor kit and was thinking that I might be able to use the 2-4 intake (rect. port) on the oval port ZZ 502 heads. Will this hurt performance and if so how much.

Thanks