I am wanting to put a 1966 shortbed on a 1986 shortbed frame. I think the wheelbase for the '66 is 115" and the '86 is 117.5". I want to swap the bodies and am curious about possible issues with this such as mounting and whatnot. Could anyone help with this? I found a truck but want to know what I am getting into and if it is possible. Thanks for any help.