I did the driver's side no problem. The only issue I had was getting the nut back on the bolt. Eventually I gave up on getting it just like factory and flipped it around so the nut was on the other side, not under the brake booster.

Its the other side that looks like a pain with what I think may require battery removal.

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car