the cooler of a brit triple is vastly huge but it is set up to take clamp on hoses only
however, it being quite similar to the one you have JB
I believe screw in pieces can be had to make it accept AN type fittings
I know for sure such ends can be silver soldered in place
transmission coolers have been used, most are vastly huge, like the brit triple cooler, and power steering coolers have been used too and are much more sensibly sized
I guess I have four or five of the power steering coolers
for most all engines that aren't brutally vicious to their engine oil (and a properly set up brit triple truly doesn't need such a large cooler if any cooler at all) it is possible to have too much cooler and cold engine oil is not a good thing for a street engine
not great for a race engine but far from as detrimental as a street bike
btw....... the triple oil coolers have really nice rubber mounts and are quite easy to adapt to others
that yamaha one is probably one of my favorites
cheap, easy to find, and easy to mount