‘55.2-very early ‘57 3200/3600s have 89” beds. The GM info packets lists the 89” bed for 55.2-56, and 98” for ‘57-‘59. I’m pretty sure they used stock on hand of 89” beds in early ‘57.
I’ve measured my step side and its 89”. I’m wondering what’s different about mounting the longer bed since the wheelbase didn’t change and GM says the frame is the same length ‘55.2-‘57.
Thanks,
Danny