Hello this is my first post here. What would i need to do to make a flatbed with hydraulic lift dually just a long bed single wheel 3500? The truck is a 97 sclb flatbed drw 3500 and i want to convert the flatbed to to a regular longed single wheel. Will i need a different rear axle or will the drw axle work? And, are frames on the cab and chassis model trucks any longer than regular long bed model 3500's?