Are turbo and non turbo hub companion flanges interchangeable w/ no other parts?

[Gregmatic]

Seems like a silly question but I recall there being an internal spacer difference between the two. I'm looking to do a 5 lug swap on the rear of an 84 n/a but would like to keep the early 6-bolt N/A companion flange and mate it to an 88 5 lug stub. This is all within an 84 control arm....ya dig.
green light or just swap the whole damn thing?

[G-E]

There is a tapered spacer that goes between the bearings, I think it's year specific, the trailing arm trackwidth is different, while the axles stay the same length...