W2 or R/T heads?

Indy/RHS had LA-X heads years ago which accepted LA intakes and valvetrains with closed chambers and Magnum valve sizes. MA-X was their Magnum version. Hughes may still have some.

https://www.hotrod.com/how-to/mopp-1003-360-x-cylinder-head/
https://hughesengines.com/TechArticles/8laxandmaxironsmallblockheads.php
Is Indy planning on another cast iron LA head?