You've got a '92, so you have the '92-93 sliding contacts system that was phased out when airbags were introduced. Grant (5275) and MOMO (4535) are the two hubs that supposedly are compatible. From what I understand, you remove the plastic piece that contains the sliding contacts from the back of the stock wheel, and bolt that to the aftermarket hub, which then accepts 5-bolt (Grant) or 6-bolt (MOMO) wheels. The horn and CC wiring, if applicable, pass through the hub as normal.
I picked up a spare rear portion of a '92 steering wheel last week to play around with. I haven't gotten my hands on a Grant or MOMO hub to test fit, but it seems like it would work as described. I've actually thought it would be nice to make my own adapter that is much shorter -- the aftermarket ones are long to replicate the deep stock wheel's placement -- and could work with a quick release hub. That would make the occasional need to climb into the back sooooo much easier.