Aluminum Master with rear drums

Ok, thanks Bill. Where I am confused is my '73 service manual show residuals valves in the master. I guess just a carryover.
I recently installed a Wilwood master on a friend's '70 chevelle and the instructions stated 10 psi rv required for drums and 2psi/disc and 10 psi for drums if the mater was located lower than the wheel cyl.
When i get ready to do the swap I'll try it w/o the RV using DD's master & plate.

Thanks,
Gary