............heads.........

Yeah, Indy is sole provider now. But remember, they come bare. You pay extra for the assembling. Talk to OU812 here for info, if nothign else. The EQ heads require stock Magnum rockers and hollow pushrods, along with new lifters. Those parts will more than likely need or be getting replaced anyway.
I still think the ultimatel;y cheapest way out is doing the X heads over. Don't get me wrong, the newer heds are better, but by the time they are on the car running they will be more expensive and require more stuff.