Look at this online catalog
They are a high perforance racing outfit but have many good things for motorhome and truck engines. Once there, click on "transmissions", then on "coolers"
Robert & Nancy with "Murphy the EOG"
Murphy has passed on, but Micah and Bogie have assumed the watch! 02 Holiday Rambler 5ver, 2015 Indian Chief Vintage. 98 Coachmen truck camper.