One Piece 67-72 Windows (no triangles)

[b&a72]

I see alot of 73-87 trucks with the windows but not alot of 67-72 which is the unit in question. Most of those trucks look like custom show trucks. This thread started as a for sale thread but has turned into (is the product good thread) and the members that have replied and installed these are not OPP sales people. Calling the factory does nothing for me as far as purchasing them but seeing other people on this forum opinions and problems will.