Welcome to the forum!
A couple things...
1. Be sure you get to hear it start up cold. That can give you an indication of the health of the injectors and ficm
. look up '6.0 injector stiction' for more info.
2. Related to the ficm
, you'll want to have a monitor of some kind to watch the engine parms if it doesn't run well or takes a while to start. low ficm
main power voltage is one to watch out for. that could mean a slew of issues. something else for you to read up on.
3. spend an extra few minutes under the hood verifying that ALL of the headstuds were replaced. sometimes, you'll come across a 6.0 with only the front visible studs replaced but the ones down the line aren't (crooked mechanics). google for locations of the other headbolts if you have some more time.
4. See if you can get maintenance records on it. I managed to get hard copies of service records from a ford dealership when i bought mine, and it was priceless. still is lol
5. Figure out what kind of fluids it has in it. i'm specifically wondering about the coolant, is it a quality "ELC" CAT-1 rated coolant? if it is, then that's excellent. Also, if it's been run with a synthetic oil that could be good news on the injectors. i think oil change intervals is more important for the injectors, but still, would be good to know.
6. does it have a custom ecm or ficm
tune loaded? if it's got an ecm tune, then you need the handhelp programmer that was used to load it. I assume it does if the EGR
is deleted. for the ficm
, just depends, you might not ever need to swap ficm
tunes. BUT it would be good to know if it has something besides stock.
any questions, just ask! not that i know the answer lol