Quote:
Originally Posted by mckpat03
Oh gotcha. I wasn't sure if they were the exact same diff or not.
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There are different size diff cases that fit the E30, which is nice! Most of what is available are the 'medium case' (188mm) diffs, specifically the common 4.10 and 3.73.
I decided I'm just going to put new seals in this 4.10 and run it until I can find a euro 3.64 down the line. No sense spending $300 in upgrading clutch packs in a diff that may or may not work out with this enging/trans combo.