Magnum heads convert to sbc rockers?

I want to run a Voodoo 712 hydraulic roller cam in a 408 build, and would like input on reasonably priced sbc 1.6 ratio rockers to use. Also any input on how well this conversion works using the 5/16x3/8 stud conversion kit available.

It's the hot set-up. The SBC rocker swap is one of the most common conversions, and the thicker studs aid in reducing deflection. The stud girdle kits will then also fit. Take a look at the Jomar girdles.