I changed ours a couple of years ago, also drivers side, got the whole assembly, a bit fiddly but not as much of a nightmare as I thought it was going to be. Folding the thing to get it out / back in was wierd for me as I'd never done one before, but once I figured which way it would work in it was pretty ok.
As per usual they are still on ebay for not bad money!
As they are not Mopar the motor probably wouldn't swap over if you tried to make it a smaller job, most likely end up a bigger effort than doing the whole thing.!!
