....for what its worth. Some guys have posted they join the rubber door seal "in the middle".... "at the corner" and so on. I agree with Tim if my memory is correct. The seal is ONE piece and joins at the bottom. The metal strip holds it at the bottom.
... prsonally I think I'm gonna "45" my corners. I have put mine around the doors "test fitting" and just can't seem to get the hang of the corners. BUT, it is ONE piece.
As I understand it the CAB windlace that goes around the cab is held on by screws in some years and the later ones, like my 52, the windlace slides around in a track. I might add that this track is available if you happen to have a piece cut out or something.
Donl, let us know how you make out. Does all this help you??