The guy who owned my new to me 99 2500 CTD tracked me down threw title search to tell me my truck has a cracked block. Is why he returned it then it got whole saled. He says that Cummin's say's this is a manufacturing defect. I purchased warrenty when I bought truck so I'm looking at a new motor. Anything I should do to a new motor before install ie, fuel system,newer engine,injectors etc. .