I fail to see why not. I looked over GG's links, electrically, this is no more of a job than any other unit out there.

And from looking at the description of the physical install, seems standard to me, no different than my JVC.

What's the big deal?

I'd install that thing for my going rate of $90USD an hour - I suspect I'd be done in an hour, but my minimum would be $90.
What would the guy charge IF you bought something he liked?