Had rear end replaced about a year ago in our F350 with a Jasper rebuilt one. When that rear end blew out 2 weeks ago, Sun Valley got the truck in same day and tore it down to see what was needed then contacted Jasper. As soon as Jasper got the new rear end to the shop they installed it promptly. They also saw an engine oil leak and fixed it at the same time. Quick, professional, honest service. I would recommend them to anyone looking for a mechanic.