I don't know about shops in Texas but I paid $139 for my gears (Gene Evans ford in ga) and $200 for the install. I have had 3.73's and I now have 4.10's. If I were to do it all over again I would go 3.73's. Alot of people will say 4.10's and nothing less but for me I don't really care for the 4.10's. You have to shift quickly all the time if you want halfway decent gas milage. The main gears I use is 1st 3rd then 5th. 5th gear at 45 miles per hour is around 1,500 to 1,600 rpms I can't really tell because I have the Mach 1 gauge cluster. If you don't care about gas and are set on solid straight line accel then go for 4.10's. If you want a little go and not have to shift like a madman go 3.73's. 93 octane and 220 miles per tank I am not digging the 4.10's. I have been drinking quite a but of crown and coke so take what I say with a grain of salt, but I would still do 3.73's!!!!!!