Big back window conversion parts question.

[Russell Ashley]

My son owns a body shop in Savannah, Ga and he has volunteered to do the conversion for me. I will buy the rear cab panel and the upper interior panel, and of course, the glass and rubber seal. My question is regarding the steel conversion parts. Does anyone know if there is multiple places that actually make the panels, or do they all come from one manufacturer? I suspect that they are all made at the same place but if I'm wrong I want to be sure to buy the most accurate and best fitting ones. Any advice and/or opinions?