I have a 1969 GTX factory AC car in my shop. The owner had it rebuilt a few years ago. The AC box. they put a plastic drip pan in it under the evaporator, they were steel from the factory. I have a mint factory steel drip pan. I took the box apart and the evaporator has 2 of the 4 mounting points are wrong. I can make it work with some fab work I think, but the owner is wondering how many different evaporators and drip pans there are in 1969. I think this is a after market evaporator and its meant for the plastic drip pan and not the steel. anyone know the story on AC evaporators and drip pans