Yes, it's a direct bolt-in. Stay away from the '01 XJ if you want the upgrade from the TJ's low-pinion axle to the XJ's high pinion front axle. All XJ's but the newest ones have a high pinion front axle.
Why in the world did they bother to make a high pinion AND a low pinion axle? Why not put the high pinion axle in all Jeeps (XJs and TJs) . No wonder why the auto makers can't make any money:roll: - John
Yep, they shorted the TJ by putting in a low pinion front axle. So from '97-99 they put all high pinions in the XJ's while the TJ got the low pinion. The HP30 is a slight upgrade for a lifted TJ.
Never done the swap in a TJ but did in a ZJ (low to high pinion) drive shaft worked fine but it was lifted. In stock height you might have some clearance issues.