Okay. I've figured out that the box and my tailgate are likely 41-46 era. My question is this:
What are the frame differences between the 39/40 and the 41-46?
Mine has the correct 123-3/4" wheelbase. Did the wheelbase increase when the cab got bigger by 2" for the 41-46 series?
Is there anyway to tell what frame is correct for each series?
Thanks!