Well being a bit impatient , I did not wait for the DVD player to arrive from Canada to complete the wiring and
connections for the overhead console. The female RCA connection in the bottom middle is video, the other two to the side are inputs to both the overhead video system and the aux. imput for the stock stereo system. The overhead video system has IR wireless head phones. This way I can turn off or change the radio without disturbing the rear passengers audio.
The system is almost "invisible", at least to the driver. Everything is behind peripheral vision, and the console appearance is that of stock. It is the graphite color, and is a thin padded vinyl covering, not hard plastic. This is a really sturdy four piece console. A steel mounting / framework piece that is separate and attached to the roof prior to mounting the console , two piece plastic skeleton / body and a steel plate laminated together , then the padded outer cover. It really is a OEM supplier quality piece.
It all sits high enough on the ceiling that would be thieves would really have to be looking for it to even see it

It would be a pain to steal, and probably would be destroyed in a hasty removal.
You can see here the recess at the headliner for wrapping over the rear support in the Blazers-
We do have a bow / support in that location for the rear mount. It is , however only about 1/2" thick and obviously not thick enough to match the front support , or the Blazer's. I carefully cut a 6"x1" long portion of the headliner over the support to sandwich a piece of aluminum square tubing as a spacer. I used the emblem adhesive to hold it in place and drilled my two holes to retain the galvanized mounting plate.
(Centered between the four provided rear mounting holes. I drilled two more holes to use four for the front support)
I think it will work great!
All the photos are on
Page 2 of my modifications album.