How much overhang past the back axle is normal? I notice some cabover campers have tailgates down and stick out past the open tailgate, but how much is too much?
The existing 1978 toyota truck does have a frame extension and I would replicate that with the tundra, but since the wheelbase is shorter, the distance from axle to back of camper would be longer than it currently is.
The wheel wells will be removed as the camper will sit a little higher on a subframe bolted to the truck bed frame. The bed will be removed.