I agree a custom cab could be had on all the trucks even the larger trucks. So what makes you think the cab is from a longbed? The vin? If The vin tells you it came off a long wb then thats were it came from. When these trucks were put togther many moons ago, They started as a build sheet. So if it statarted down the line as a long wb it got a vin num of a long wb and vise versa. So if your vin number in the cab says its a long wb and its on a short wb frame I would say some one other than the factor changed your cab. Maybe I read to much into your question, but I hope this helps. But who realy cares what the cab went to as long as your happy with what you got. Bet theres not a lot of people that would even notice. Good luck with it!
