I took the back rest off for the bench seat, I found the vertical supports by drilling holes, they are about every 10". They are 2" x 2" aluminum. I know these are way overbuilt and made to withstand a rollover. I'm wondering how many of the supports I can cut out, then weld back in a "header" around for the window, or really I guess my question is how big of a window do I cut in? I could do two or three smaller ones if needed. I'll try to get a picture of where the supports are later today. Here's one of us at the Space center, I thought it was good how we had the same paint scheme as the shuttle!
Ambulances are designed to withstand a roll-over accident, and still have the doors open without outside assistance. Since you don't need to comply with ambulance design requirements, you can cut supports to install a window. If you need added support to the outside skin to ensure that the window frame will be rain-proof, you can install cut-to-size pieces of 1x2" aluminum channel or similar between the existing frame elements. These can be held in place with pop rivets, structural epoxy, or even something like 3M 5200 marine adhesive/bedding compound.
Alright, time for some updates, sorry for the long absence! The rig rode like a lumber wagon, I put a Kelderman air ride on the front and the difference is night and day. Those guys are great to work with, I'm only a couple od hours away from them, they really helped me make it ride great. Before I had to have both hands white knuckle on the wheel, after just one white knuckle will do it
I did open the wall between the cab and the module up, that made a big difference on the view from the back and has helped with passenger car sickness. The air ride has help with the sickness to as it has made it a better ride.
I bought a wheel chair lift from VanderHaag's salvage truck parts. It was in a city transit bus, went in pretty good, just a little head scratching, but got it figured out.
We just got back from a trip to Yellowstone. Stopped on the way out at Mt. Rushmore, hit the Big Horns and stayed on the NE side of Yellowstone at Silver Gate, MT. Did the park for a few days, then left via Beartooth pass. Caught the Badlands on the way home. It was a great trip with no breakdowns!