Thanks guys! I'm likely going to be paying to have this installed, along with a set of Alpine speakers, and just wanted to know what kind of task it was.
I didn't want to be surprised by the cost of something like an amp installation where they'd have to remove seat (and possibly console), snake wires under the carpet, etc. If there's plenty of room under the dash, the cost of wiring up a power and ground, then plugging it in shouldn't be outrageous. Since I ordered the headunit from Crutchfield, getting their excellent instructions, I may even tackle the job myself...
I ordered the Alpine speakers, which apparently are direct bolt-in, from SonicElectronix, because they had MUCH better prices on the speakers - $90 less for the four speakers combined. Sonic was actually higher than Crutchfield for the headunit and HD converter, since they added on $20 because of the higher cost of the installation kits for these trucks. From Crutchfield, all the installation things were free...
I ordered the new (became available March 31st) JVC KW-XR810 headunit and HD radio add-on, with Bluetooth and USB front and rear (plus front Aux), 5 sets of RCA jacks, plus subwoofer control built-in, etc., with Alpine SPR-69C 6x9's for the front and Alpine SPS-600's for the rear. Now, I'll be anxious to get it in all installed and see how it sounds with just the 20W RMS (50W max) headunit driving it, once the speakers are well broken in. I'm hoping for enough bass with those 69Cs not to need a sub (don't want to sacrifice the space), but I can readily add an amp or sub if I need to...