Ok i have a 96 obs with a 4EAT and my rear diff went BOOM! The final ratio of the diff is 4.111. I have done my google-diligence and know most of the subaru models with 4.111 diffs. My questions is how new can i go? Can i use an 06 impreza diff that has a ratio of 4.111? What problems will i most likely encounter? I would love to be able to upgrade to an LSD. Any input would be great appreciated.
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