Mike,
This topic alone is enough for a book. There is a lot of published information on replacement tubs. My understanding is MDJuan is the only manufacturer. Everybody else is a distributor.
There is a long thread on updates to fix problems that have plagued MDJuan's production for decades. Rommel came to a Reunion a few years back and over the course of several months a lot of feedback was provided. Things were fixed.
The tubs are better now but still not perfect. Apparently Rommel has focused his attention in another area. I'm not sure.
To ensure you get the latest and best available, you will need to be able to decipher the manufacture date, i.e. before the updates (more manipulation will be needed) or after the updates (fewer modifications to get it to fit).
Willys Overland in Toledo has made a business out of "fixing" the tubs so they fit. I haven't kept up with them much.
There are multiple vendors that supply the tubs. There was even a military vendor that was doing his best to ensure his tub kits were the latest so they should be on your shopping radar.
Some of the posts:
https://www.thecj2apage.com/forums/new-tub_topic44082_post440449.html?KW=mdjuan#440449http://www.cj3apage.com/cgi-bin/3Ayabb26/YaBB.pl?num=1480176972/2#2https://www.tapatalk.com/groups/cj3b_bulletin_board/viewtopic.php?f=2&t=3697&p=36020&hilit=mdjuan#p36020
