i just did mine on sunday, gearbox in car with no body lift. was lots of fun
but i managed to fit some 8 or 10mm (can't remember which one i used in the end) oil cooler hose on and a small hose clamp. There definately isn't much of a nipple for the clamp but i think (hope) it should be just enough, it seems quite secure for now but i will keep a close eye on it.
you might already have seen this but here's a write up of someone else who's done it, although it's for 2002 TJ so i'm guessing not ax-15.
In the gallery there's some pics of your jeep too!
http://jeepen.com/mods10.htm