Magnum heads and cam selection??
The RHS heads have the closed combustion chambers (magnum style). Here they are at Hughes, or the link UOP posted. If you get Magnum heads (with magnum stud-mount rockers) you can get the rockers POS Dakota posted, but those are $475.
Well, I just looked, and regular shaft mounted LA rocker sets are about the same for aluminum roller rockers, or you can get stamped steel ones for about $170.
I still say go with LA heads because it leaves a lot more options for intakes and rockers. I had my Magnum heads drilled so they can take magnum or LA intakes.