Magnum Head Rocker Arms

Hey All!
I'm using Chevy style 1.6 Crane rockers on my magnum heads and they seem to be working ok except for the valvetrain noise. Sounds like it has a solid cam with all the ticking.
I was wondering if anyone ever looked at the issues to install a small block Ford shaft system on a magnum head. It looks like it's worth looking into from some of the pictures I've seen.
We need a cheaper alternative to Hughes shaft system.