Nice looking WJ, I have an 02 laredo with the 4.7.
change the fluids and do the maintenance and they run forever.
Only tip I would give you, is run the stock champ copper plugs.
also change the PS fluid if the owner has never done so.
The only other week link is the accumulator plate on the valve body, when you change the transmission fluid you might want to drop the valve body and at very least change the plate and put loctite on the bolts so they dont back out.
change the fluids and do the maintenance and they run forever.
Only tip I would give you, is run the stock champ copper plugs.
also change the PS fluid if the owner has never done so.
The only other week link is the accumulator plate on the valve body, when you change the transmission fluid you might want to drop the valve body and at very least change the plate and put loctite on the bolts so they dont back out.