Well, I was going to install my 4.10's myself and have my boss's son (who builds race cars) direct me on what to do, but he never seems to get any free time and I am ready for these things to go in. There is really only one shop around here that I trust enough to do the install, and that's Midway Ford. They couldn't give me a quote on the install though. They said it's hard to tell for sure how long it would take, but the rate is $75 an hour. How much do you guys think it would cost me to have them do this install?