5.2 magnum 392 stroker in 70 duster, some ?s and what heads?

Indy makes a set of MA-X heads that are standard bolt on for the magnum engines and use magnum oiling and valvetrain components. They are steel head and look relatively stock. Here is a link to them....I am using the LA-X heads on my 360 motor I built for my W150 POWERWAGON and they are said to have some good numbers for the money.

#8---La-X and Ma-X Iron Small Block Heads