Been near 8yrs since I had my 712 but here is what I recall....
What is the length of the bed of the vehicle? (essentially the length of the bench seats in the back)
This I don't recall exactly, I am thinking though 12ft. A 712 is loooong.
What is the interior height of the vehicle? (from the floor of the bed to the roof)
Not much, even a short person has to bend over to move around in the back. So about 4ft if I recall right.
What is the interior width of the vehicle? (including the wheel wells)
Again, not much, maybe 3ft max between wheel wells.
I am puling all this out of my ******** from memory 8yrs ago. I have all the books on the Pinz somewhere but am to lazy to dig them out. Perhaps somebody who owns a 712 will give you exact specs, mine are not real far off though. Think VW bus on steroids. That is about what a Pinz is, perhaps even smaller due to mid engine vs rear engine. They are very narrow trucks, my 712 would fit on ATV trails no problem.
My questions to you would be, what do you want a 712 for? What are you going to do with it? What are you willing to put up with to own one? Are you ready to do your own work or pay over the top to have somebody do it for you? Do you like slow, loud trucks that are hard to heat?
The Pinz is a slow, loud, cramped military vehicle. It was designed very very well however. It will drive though deep ruts and mud no problems, it will climb slopes you wouldn't think a vehicle could climb. It will drive through 4ft of water no problem if you seal up the engine. it will take a dozer to get it unstuck when you bury it in deep, trust me I know this! The 712 handles pretty darn nice on pavement up to about 60mph, its max speed. It will also flop over on it's side easy due to narrow width and no axle travel. In this regard they really are hindered off-road. While not hard to work on it is technical and not for the average hobby mechanic. Parts are not cheap. Having said this, changing the clutch and dropping the transmission in mine was the easiest truck I have ever done it in. Axles on the other hand have two ring gears and the drive train is built on a central tube chassis, not for the weak mechanic!
A Pinz is a toy and should be treated and thought of as such. Just like your ski boat, snow mobiles, jet ski, or rock buggy. Very few people own them for more then a year or two after the "cool" factor wears off. Even less use them for overland travel and even less daily drive them. None the less it is a very well made truck that can be used to drive around the world, albeit very slow and noisy!
Cheers
