I thought about that but I wanna stay big block. Besides, the suspension is set up for the 440. and I've got everything but the heads to complete that build
Yes they are. and they are priced accordingly. That said, the Marsh heads have a really good reputation and a full port job and custom set up for my combo will cost me about 1300 bucks shipped to my door. Flowing as well as the trickflows out of the box.