I ended up with this rear IRS unit from 1988 735i.
It has 3.64 LSD and came from a very clean car with around 150k miles (supposedly) The interior was very new looking and it didn't look like anyone ever sat in the back seat.
Can some one weigh in and confirm this will fit an e34? The diff is the same as my other LSD 3.64. There was a self leveling set up on the car and one or two of the sensors are still there.
This thing weighs about 300# and shipping is not included. I am in West Michigan and may consider a semi-local delivery. Needs new body mounts.
1990 535im 421,000 miles, 1987 325is, 1989 325is, 1990 m3, 1991 318is, 2001 X5 3.0
The frame is wider than e34, not sure about the arms. The brake rotors are 12mm instead of 10mm- I think the calipers, hubs, axles are different too.
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08/88 535i e34 M30+miller MAF, 'stiens, tints & teeth!