Got the new oil cooler in and it went smoothly. No spills, no dings, no errors. Now that I know it's a good fit, I've got #2 on order for replacement on the port side.
Thanks all for the advice and support. Now I've got a water hose and a couple oil line nipples in the fix-it kit as a bypass solution just in case! Maybe that's not a bad idea as a work-around for a critical engine component that typically lasts such a long time that it may not be practical to carry a spare oil cooler. But a bypass kit is cheap, light and compact.