Actually yes... I did this about 5 years ago to a 95 half ton burb. Although I cut the burb off right behind the wheel wells in the rear welded on the back couple inches of a reg cab to it, shaved what was left of the opening for the big sides, shaved the rear wheel wells, took a srw long bed and a short bed grafted em together to make an 11'6" tandem axle bed. Thing was crazy long and pretty much like driving a school bus, customer loved it tho. Drove it pretty much everywhere. Was in se Ohio. Will try to dig up pics.

To be honest for what you're wanting... drive whatever distance it takes to buy crewcab. The burb roof dosent line up with the cab as well as you'd think.