Congrats. On the HPFP, it's the thing in the past. If the X5 is 2011+, you're getting the N55. The N55 has roughly 80% new parts, a huge upgrade from the N54.
I owned a 535i for 43k miles with no issues, other than a minor vacuum hose leak (no biggie). My X5 35i has 23k miles on it, error free (knock on wood).
Post the pictures soon???
