Great work; keep up the updates! (pics would be nice too.
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FYI: Pawn shops are also a great place to pick up oddball tools. I frequent a couple of shops near me and snag decent looking wrenches when I see them. They are usually just tossed in a bin marked $1 each. The e28 and e32 require a special tool to get at one of the nuts on the upper control arm; I bought a 1 1/8" combination wrench and modified it slightly with a grinder to fit the application. Best $1 spent ever.