[m5james]

If you've got the option for the minor inconvenience, I'd absolutely go rebuilt considering your costs vs what it'd cost outta pocket knowing they're gonna fix the issues that caused you to be where you are in the first place. I'm still kicking myself for spending $2800 (including labor) to swap in a used N54 only to have it fail 10k later for another known N54 issue...vs the $3500 I could have paid for a rebuilt with fixed issues and not wasted a week. Swapping in a used one is putting off the inevitable the it seems to be plaguing many of the modern BMW engines.