Question about 1999 Buick Regal with Monsoon Stereo

I have a 1999 Buick Regal with a stock Monsoon AM/FM Cassette/CD head unit.
I really don't like the stock head unit so I'm looking to upgrade to a newer OEM unit that would be compatible with XM satellite, with a full
text dot matrix display.
I would, however, still want to be able use the (factory) steering wheel mounted stereo controls.
I couldn't find an after-market stereo that would be able utilize the factory steering wheel stereo controls without some wonky 3rd party device, and I really wouldn't want to go that route.
So I was wondering if there's any way I would be able to install a newer (OEM) GM head unit that would allow me to have a full text readout with XM capabilities as well as steering wheel controls. Like something from 2002 or newer that I could get from eBay.
I'm not afraid of soldering, so making a home-made wiring harness wouldn't be out of the question at all.
Obviously I'm a total newbie when it comes to this sort of thing so please go easy on me ;-)

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