I'm experiencing the same thing. I took a short bed off a 76 f100 to put on my 76 crew 4x4 and realized the frames are different widths. An earlier post says the holes closest to the cab will still line up, but mine does not.
I forgot to mention that the front bolts closest to the cab are the same on the highboy and wide frames... so only 6 of the 8 bolt holes need to be re-drilled.
Great pics and info. I just put a short bed on my 76 crew 4x4 from a 76 f100, but the front holes had to be redrilled as well. And as far as the rear braces, I just had to scoot them in to match the frame width, and didn't have to add the blocks on the very back because it sat flush on the frame.
Hey this truck did it spend some time in oregon? I'm looking for my grandfathers old truck he traded it along with his trailer for a car because the truck broke down during a cross country move. He passed away last year and I've been looking for his truck now for months if there's any chance you can check the owner history for a Leroy bruesch or a Lola bruesch? Maybe I can clear this off my list or maybe I've found blue.