50hp is substantial for sure. This will be a sweet build if you decide to pull the trigger.

Didn't realize it was so expensive to FI the m62tub44... thought for sure that could be done for $4000 or less.

Would be awesome if you could find an m62b48. But those only came in the Alpina B10 and the Alpina roadster. 370hp/376tq

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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)

2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)