While I ponder the possibilities for the rear suspension drop, I thought I had better go on record as saying:
I'm planning to get very greasy tonight. I will be investigating the possibility of mixing and matching inner and outer CV joints on the same shaft.
Since I'm using the later model "heavy duty" outer knuckle/spindles from a K-car, and the inner drive flanges of an early Omni/VW trans, there is no 100% bolt-in solution.
With any luck, I'll be able to swap one end of one shaft onto the other end of the other shaft. The alternative is cutting, sleeving, and welding, which I would prefer not to do unless absolutely necessary.
Steve.