I may not be familiar with cars since I do not own one. However, I was told that there is a company called midwest auto recycling that deals with use car engines and transmission that come with solid nationwide warranty.
Over here, I know that most companies do not provide any warranty at all for used articles but not Midwest Auto Recycling. On top of the warranty, their used car engines and transmissions have already cleaned and tested, inspected and then only approved to be sold.
According to sources, these used car engines are in a complete assembly and are ready for installation. This sounds like a hassle-free purchase to me. If you have tried Midwest Auto Recycling before, I would like to hear of your experience!