Is the original post in that thread the best/ideal way to do this mod? This is something I'd like to tackle on my '06 4.4i and I did a similar set-up with my E38 (just with the Umnitza AE kit), but I thought I'd ask before getting into it.

Thanks!

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E38 740i (9/94, GF61, JPN: M60B40, ZF 5HP30, 3.15:1)
E53 X5 4.4i (5/06, FB53, US: N62B44, ZF GA6HP26Z, 3.46:1)