---update---Woo hoo... finally got ahold of the "right" company...installers will be here by 2pm and about the back glass, since the truck has no a/c it will soon (before next summer) have a sliding back glass installed for "flow through ventilation"
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
finally got ahold of the "right" company...installers will be here by 2pm 
and about the back glass, since the truck has no a/c it will soon (before next summer) have a sliding back glass installed for "flow through ventilation" 
