Sounds good. No hurry on getting the measurements. I was just curious to see if Ma Mopar made the core supports different on the 70's cars.
Mine won't work with the factory fan shroud even though they are advertised that they will. The core on the Champion radiator is a bunch shorter than the stock radiator so the fan shroud overlaps the hose fittings. See picture below. The angle of the picture makes it look like the fan shroud dwarfs the radiator but it's really not that much diff. The width is right. Just the height is off. Being a direct bolt in and using the stock fan and shroud was one of the reasons I bought the Champion radiator. Too bad it didn't work out.
I don't think mine got twisted in shipment. It wasn't double boxed but was very well padded. The box shows no signs of any damage at all.