converting a 2x4 to 4x4

[fordguy_78]

Has any one put a 67 body on a 91 F250 4x4 high boy?

[67highboy]

Ifmyou want a highboy you are gonna have to go back to 1977.
This was the last year for thefactory highboy.
but as far as the 91 chassis goes it willfitbut you will have to move the cabmounts in the front..

I think anyway, thats what I was told