IF this is not an aluminum Dana 44 rear, its a smokin deal!
http://longisland.craigslist.org/pts/2503806408.html$700 for a D44 locked???  Sounds too good to be true.  I'm betting it is an aluminum one, but hey worth checking it out.
i have a d44 rear axle out of a zj (93-98) grand cherokee (perfect for an xj rear conversion).. this thing is badass, got me through absolutely everything; this rear is 100% good to go..
 lets see, it has: 
ausie auto locker with new gears
 chromoly heavy duty inner axle shafts
 heavy duty skid plate/truss that covers underside of axle tubes all the way to the pinion
 heavy duty diff cover
 rear disc brakes
 new bearings and seals all around (drips minimally from the pinion seal, but thats not uncommon) 
over $1000 in parts alone, not including labor and the rear itself, so dont lowball me! 
631-682-5540 steve 
(i also have the dana 30 front axle for sale, it has an arb air locker)