I've installed 3 non compliant (due to depth "issues") radios in my
bus- 2 Sony & 1 Dual.

  The latter has a built in high definition tuner (HD), which I find
useful in the city.  For example Atlanta GA's one and only public
radio station has 2 additional side channels, broadcasting classical
on HD1 channel and HD2, HD3 is made up of various PBS & other
providers' talk programs.

   My supplier in each case was www.crutchfield.com ...competitive
prices & real, shur 'nuff customer service.

Geo/ATL