As an update, I spoke with Kevin @ K-MAC and he suggested the wrong bolts were supplied with this kit as well as the nut. In regards to the bolt, it has a tapered end that should be cut off to help accommodate the sub-frame interference. The nut is too deep, 15mm vs traditionally 12mm that should also barely squeak by since the golden-knurled washer is essential for "biting" down during torquing of the assembly.

I totally appreciate Kevin for taking my call @ 6 am ozzy-time. :Australia:

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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit
2007 BMW X3 3.0Si -- MT6