wheel adapter

I think it’s important to point out that an old 8-3/4 is only worth the cost of the housing and what a rebuildable 489 case goes for. They all need to be rebuilt and gone through completely. By the time you straighten & narrow it, buy new axles, replace everything and add disk brakes you most likely will be around $2000-$3000. I don’t know if that’s worth the cost... DTS here in Michigan rebuilt mine with my parts for $160. That’s too good of s deal to me.

I’m taking it the OP wants the get the car rolling while it’s being worked on. You could drive I like that, but it’s easier to just get your suspension work done then buy your wheels. Your wheels will always have a funky looking offset to them if you want to run adapters on that old 5-4” bolt pattern.