Magnum heads convert to sbc rockers?

Thanks for the input everybody, I will consider the Hughes deal , as it looks to be about the best considering cost versus what it offers. One possible change though on cam choice. Two reliable sources are using other brands, less radical ramps allow more stable rpm before lifter pump up is what I was told. The dyno operator I plan to go to said the Voodoo cams have fairly radical lobes which on some of their dyno sheets show them having less rpm potential due to lifter pump up. He said they saw instability as low as 5500 rpm. So,, A Muther thumper looks like a winner. The right .050 specs for what I want, and ought to be stable.