Since this isn't a for sale thread anymore and the OP is no longer offering the product, I'll chuck in my .02
I bought a 7" touchscreen off ebay for 100 bucks. It was a little more than a garden variety backup screen because it's a touchscreen, led backlight, TFT and setup as a computer monitor. I also bought a 12v night vision ccd camera off ebay for 35 bucks.
Tossed in some wiring and my backup cam is off an running.
I put a bit more work into the install though and mine is a 98:
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That's an old pic, but you get the idea. I've changed it up since then with a different cb, removed the ipod and a few other things. The 88-94 is even easier if you've gone to a single din radio in the dash. The right sized screen will pretty much fill the original radio head opening. A little measuring before you buy should get you pretty much bang on. Then it's a simple matter to build a bracket to hold it and maybe a little filler panel if required. A side bonus is most screens also have several "Aux in" so you can send a video feed to it. Like and ipod, dvd player, etc. Or you could put a forward facing cam. Get enough inputs and you could put a cam in each wheel well for rock crawling. The only limit is you imagination....my touchscreen also runs a "carputer", although I don't use it for much more than OBDII gauges since moving to an Iphone 4s.
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My camera is high mounted so I can look down on the trailer hitch as we travel and I can also see the left and right bumper ends when high mounted. The cover is fiberglass and built into the cap door fro security and weather protection. That pic has the camera covered over with foil tape as I was spraying the white paint at the time.
Ebay is flush with the parts you need and cheap:
http://www.ebay.ca/itm/CMOS-Car-Rea...r_View_Monitors_Cams_Kits&hash=item2c714f4e09
http://www.ebay.ca/itm/LCD-Color-Mo...r_View_Monitors_Cams_Kits&hash=item2ecc34f4f9
http://www.ebay.ca/itm/WIRELESS-REA...r_View_Monitors_Cams_Kits&hash=item4acc5d8aef
A little bit of fabrication, a minimal amount of wiring and you're done.
Cheers
