I measured diagonally from the lower ball joint grease fittings back to the rear frame rails. It's the suspension that matters anyway instead of the front subframe rails. I don't trust those alignment holes after all these years.
I used plumb bobs and had help holding the tape against the string .
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Trey
Current ride: 2001 BMW 540iT soon to be manual swapped.
Former rides: 1979 Trans Am WS6: LT1/T56, Kore 3 C5/6 brakes, BMW 18in rims
00 BMW 540i/6: Suspension, wheels, and ACS bits.
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