[jacksr]

I'm in the process of converting a 2007 Int 4300. I started with 198" wheel base. The first thing I did was cut 2' off the frame rails. I will be pulling a 10,000 lb 24' car trailer loaded with two Jeeps and wanted the rear axle to be as close to the back of the box as possible. Next, I cut the back out of the cab. I then purchased a 22' x 8' x 7' box. I had it custom lowered and mounted to my frame rails. I then cut the front out of the box to match the cab opening. Then I purchased and installed an Uni-Grip 4" accordion seal between the cab and the box. I used 3/16" aluminium diamond plate as a threshold.

I cut a 46" x 76" door opening on the passenger side to accommodate a wheelchair lift. A used Braun school bus lift was installed into the opening.