Thanks thats great info guys!! Just to cover myself Im using the shafts, unit hubs, rotors, calipers and brake pads from my 2001 axle and installing it all on the unknown year hp30. I already have the upgraded spicer ujoints on the shafts.
Caronaxtr- did you have any issues running a hp in the xj since you have two pre cats on the exhaust system? I heard the pinion will contact them on full stuff. How much lift are you running? Im at 3" but have 2" spacers to use if needed
1991 Ford F250 7.3L IDI diesel
2001 Cherokee sport "AGENT ORANGE"-DD BUILD THREAD: http://www.jeepforum.com/forum/f177/agent-orange-build-1306755/
1948 Willys CJ2A++1994 Wrangler 4cyl. manual trans++2012 JK 4dr unlimited 6spd