They are private sellers I'm referencing to. If you really want a warranty buy a $2500.00 used engine just with a paper guarantee from Billy Bob. Anyone who isn't hiding anything sells the engine in the car while it is drivable for an around the block test or to let it idle up to temp if you go the part out route.

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k