Does anyone know if anyone sells 7a and AAn exhuast manifold flanges? I want to make a custom turbo manifold for each of these engines. I did a search but didnt find anything, so please no flames! (unless they're coming out of your tailpipe)

Thanks!

Also, I forgot to ask, I know the 7A and 20vturbo head flange are different, but does the 7A manifold bolt on to the turbo head using half the mounting holes? Does the turbo manifold bolt on the 7A head using half the holes in the manifold?
TIA!