Question about replacing R/F system

It will depend on what you're trying to gain by replacing it. You pretty well have all the boxes checked as far as function. If you swap, you'll need a new XM receiver as the factory one is unique and only works with the factory syatem, I believe. You'll need a steering wheel control adapter, but that's not a big deal. You'll need to figure out if the existing backup camera hookup is adaptable to an aftermarket deck but it "should be."

If you're just looking for more punçh, you might consider doing a speaker/amp/sub upgrade instead.

I'm no expert, so keep that in mind. The factory speakers and RF head unit are not the usual 4ohms, if I recall correctly. There is a set of Infinitys which are the correct impedance, which is 2ohms, I think, but check that. Amps are a different beast, and I know little or nothing. Maybe some of the stereo guys will come along to help with that.

When I last installed audio, Pioneer and Sony were good, Kenwood was better, and Alpine was some of the best you could get. There's a lot more out there now.