Boy did I mod this one, First off took the original vehicle removed a few parts, then I remapped part of the frame. so as I could put a sliding, tilting 5Th wheel on the frame. And then of course had to add the 1950s bunk. yes that is a close representation of the 50s bunk. Access was from outside the Vehicle. The image of the three together, not the artsy one is the 4 stages before the bunk. The original that's the blue one. The Red one is stage one of the mod remove the gate and side walls, then stage 3, that is the black one. I then in stage 4 modified the Kenworth, and Peterbilt bunks merge them into one bunk, and put them onto the GMC Farm Truck.