www.hiperformer.com gives a unique warranty of 7 years or 100,000 miles on their remanufactured engines. Since their rebuilt engines are of extremely high quality customers can purchase them with great confidence. Most of the parts in their rebuilt engines are new, so no old parts (exceptions are always there) are used. There remanufactured engines meet or exceed industry specifications. Since their engines are shipped in bulk, you can get a discount on the freight. www.hiperformer.com has been in the rebuilt engine industry for about thirty years now. In addition to automotive engines they also sell marine engines.