Suggestions for new design Aluminum Mopar SB clean slate (kind of) cylinder heads

Thinking about magnum vs LA exhaust ports and header availability. Here are some pictures with a felpro 1413 gasket representing the LA port and a cometic gasket I had made representing the magnum port. gaskets are placed on...
(1) stock LA port
(2) EQ magnum port
(3) Speedmaster LA head
(4) stock magnum head