1) What application are they being pulled from
2) What was the maintenance schedule they were on (I'm assuming these are from a fleet since there's so many...if i'm paying 2K for an engine, you should be able to tell me more than "oil just changed")
3) Condition of the turbo(s)
4) Come with starters and flywheels? Any other accessories (vacuum pump/etc.)
5) Condition of the injection system on them?