Back story.. 1973 cj5 been in family since new. Stretched it into a cj6.. All caught up.. Ive been trying to get this thing back on the street after wheeling it for a decade. I started out just wanting to change the water pump but then found a ate out spot on the timing cover behind the water pump. Looked to bad to fix. Found another locally and bought it. Went to put it on and noticed a huge crack down the side of it. $100 down the toilet. Found a kid at a tuner shop that said "Hell I can weld that timing cover up" So I let him try and he did. Even filed and lapped the water pump face down to within .0002"! Changed out the timing chain to a new one and proceed to try and button it up. Went to put in on and remembered the timing cover really sucks to put on the v8 with the oil pan installed. The pan was slightly leaking so what the hell. Pulled it and said "Better change that rear main seal!" Well sHiat... Never should have pulled that bearing cap off! . I had already changed the rear main seal in 2003 and only 4k miles ago.... But when I pulled it the rear main bearing is showing all copper. So I Pulled the next bearing... Almost the same... almost all copper showing! All the other bearing caps were pulled and they show minimal wear and no copper. So those are good.. Typical AMC bad rear oiling strikes again.. I pulled a few rod caps and the bearings look great on them. Engine has 60k original miles on it. So now what. The engine did not knock had decent oil pressure for a AMC v8. Has bad valve seals but that was literally it. Ran like a watch since I have had it. 1994 is when I bought it off my father. Crank journals look great. No crappy finish nothing.. All look great. Factory main bearings don't show a over or undersize notation on the back side. Just a part# and date with a AM logo. Part# doesn't show up on any amc parts # searches... I'm in a bind. The engines in and the cash to get it on the road again is almost tapped out. There's no way I could pull it where I am at and even them the money to have the lower end went through. I've done main bearings in the car doing the screw method to roll and insert the top main bearings out and in and have very good luck... But all those the bearings where marked for under or oversize and on chebby 350's Valve cover tag doesn't show any undersize bearings. Just year size and date. I gotta try and get this thing fixed in the jeep. But it seems really stupid to try and just put the cap back on with the rear bearings showing copper . Without the crank being pulled I haven't a clue how to try and find out what bearings it needs unless I just assume they are all standard size bearings and just go for it. Any ideas... I know a long read but I wanted to cover all bases. Like I said...when it rains it pours.. One thing after another and all that.