LeSabre Steering Wheel
I've seen no info about this swap so, I can't help you there.
I'm open to aftermarket, there are wiring adapters available, but it's been reported that the Climate Control panel won't dim after the install. My plan was to buy a rebuilt LeSabre radio from a vendor on eBay. It's interchangeable with the RM radio. The wheel and the radio would likely work together.
I'm thinking that GM used the same steering column in the mid and full-sized vehicles.