I guess part of me figured since the M54B30 version of the 3.0i was found in several other models, that I could slip one of those sets under the hood of the X5.

Short list of cars w/ the I6:

• 2001-2005 E46 330i/330xi
• 2001-2006 E46 330Ci
• 2001-2003 E39 530i
• 2001-2002 E36 Z3 3.0i
• 2003-2006 E85 Z4 3.0i
• 2004-2006 E83 X3 3.0i
• 2001-2006 E53 X5 3.0i

Some one has to have headers for the Z3/4 or 530, right?