That's pretty much what I'm thinking. 32 spline (kinda rare?) Chevy NP205 with a Ford 31spl NP205 input gear. Or Chevy NP208 with the round bolt pattern, but with a Ford 208 input gear. Only trick to the Chevy 208 is making sure that the Chevy round pattern clocks correctly (or can be redrilled) to match the Ford pattern. The Ford pattern is six bolts, and I think they're equally-spaced, two on top, one on each side at 3:00 and 9:00, and two on the bottom. I don't remember where the Chevy bolts are.
Or do a doubler, but that's fairly expensive.