szybura Posted March 27, 2010 Share Posted March 27, 2010 I've read where someone outlines swapping the gears from one to another. I have a 3.9 in great shape but need to replace a 3.7. The 3.7 is out of a 85 brat and the 3.9 is out of a 86 brat. Any direction would help. Thanks Link to comment Share on other sites More sharing options...
Jibs Posted March 27, 2010 Share Posted March 27, 2010 Swapping the ring and pinion? or the lsd chunk? http://www.ultimatesubaru.org/forum/showthread.php?t=49924 Link to comment Share on other sites More sharing options...
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