KW T660 transmission oil cooler from coolant to air

[Chamberpains]

Got up this morning and I'm missing 2 gallons of coolant. Couldn't find it in the dark while its raining. I drove 100 miles to Baltimore and I found it... puking out of the transmission. What I'm looking for is a part number for the universal mount heavy duty air cooler. Anyone have it? This will be mounting to the back of a 13 speed eaton trans.

I knew I had to get this stupid coolant style heat exchanger off but I waited to long...

Also, im in a bit of a pinch being under load now. Light load but still loaded 15,000 lbs crane parts. Im gonna drive the 100 miles home with the milky oil. But is it OK to drain and refill the trans and just plug the oil cooler lines while I wait on a cooler kit to show up? Load goes 200 miles away.