No you didn't or no they weren't.
99 and on grands are all 5 on 5 bolt pattern, same as the current JK. All YJ’s, TJ’s, XJ’s and 93-98 grands (ZJ’s) are 5 on 4.5 bolt pattern.
The aluminum D44 or D44a rear from the grands is not worth it's weight in scrap metal. The axle is prone to gear deflection due to the different metals and different rates of heat transfer, add a locker and it gets worse. The ZJ D44a and I think 99-2000 WJ D44a were all C-clip axles. The factory "locker" is not a locker, it is a LSD that is about a sstrong as a toothpick.
in closing, not worth $200