[andyg]

I just found a picture of you truck. I like the box and think that it will be a good starting point for a conversion. The cab on your truck is common to pickup and med-duty trucks which don't usually have a sleeper thus making a pass through is a little bit more tricky. The full-width rear window does present a challenge. Conversions on medium duty trucks are pretty common. Maybe you can find some pictures online of conversions on Ford trucks to see how they solve the problem.