martiw2 Posted November 20, 2010 Share Posted November 20, 2010 Hi I have 1987 XJ donor with Dana 44 towing package, I want to know if I can swap it in my 1989 MJ with out problems William Link to comment Share on other sites More sharing options...
juan Posted November 20, 2010 Share Posted November 20, 2010 yes you can, only thing you need to do is remove the spring perches from the top of the axel and reweld them to the bottom to fit the mj - also make sure the gears match your front end. Link to comment Share on other sites More sharing options...
ryno56 Posted November 20, 2010 Share Posted November 20, 2010 yes you can, only thing you need to do is remove the spring perches from the top of the axel and reweld them to the bottom to fit the mj - also make sure the gears match your front end. the spring perches are also spaced narrower (34" I think) so make sure you don't go with the spacing they are at from the xj. Specs for gear ratios are easy to Google if you're not sure which it has. Link to comment Share on other sites More sharing options...
Pete M Posted November 22, 2010 Share Posted November 22, 2010 I believe MJ perches are 42 inches on center. Link to comment Share on other sites More sharing options...
ryno56 Posted November 22, 2010 Share Posted November 22, 2010 I believe MJ perches are 42 inches on center. Right, that's more likely. 34" would be awfully narrow :doh: I knew there was a 4 in there though. Link to comment Share on other sites More sharing options...
mkbruin Posted November 22, 2010 Share Posted November 22, 2010 Don't forget the driveshaft length issues. Link to comment Share on other sites More sharing options...
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