I'm mistaken, it has about 15k on it. The truck it came out of had 50k on it. Truck belonged to the father of a guy I used to work with. His Dad parked the truck (in a bad spot with the windows cracked) due to health reasons and the truck essentially rotted into the back yard. He Dad had a lot of car/tractor/junk and the guy I worked with didn't know much about it and only was able to sell about half of what was there. I ended up buying the truck and few other items and helped clean up the rest.
I sold my 500 before I installed the GV. Was going to put it in my shop truck, but I am heavily leaning towards some kind of OD trans like a 4r75w or similar. So the GV has been sitting on a shelf.
Best I can tell is the GV was installed 12-15k before the truck was parked. I have everything, including the driveline, that was pulled out of the IDI truck. The control box, speedo cable extension and cruisecontrol signal generator.