Unless you know exactly why the pan was pulled I'd just steer clear. It may be because there was a noise and they investigated it and failed to re-install the pan. How was the engine stored, on a stand? Without the oil that was in it still being in there, how can you check the oil condition? No smell test, no sample test able to be run by a lab, who knows the truth about what went on with the engine. They may have just pulled the pan to sell it seperately but its not worth the risk to me unless they sell it to you for about $500 for the risk or they give you a 90 day warranty active from the day the engine starts in your conversion, not the day it leaves their yard.