The compact IIs (IIcx, IIci), and the Quadra 700 all had the same PSU, and I am nearly certain that the Quadra 650, IIvx and the PM 7100 had an upgraded version of the same PSU that fits in the same form factor.
I've run a Quadra 650 logic board with the IIcx PSU one time when I was dealing with Astec fun, though I did notice it had trouble booting with too many NuBus cards. Replacing the PSU with one sourced from a dead PM 7100 ended up fixing the problem.