Any of you here in AZ have a good place or know someone that does a good job of installing gears for a good price? I currently have 4:56 gears in my truck now which are awesome for around town driving, but I do a lot of freeway driving with my truck, and only have the 5 speed allison so mileage could be better. Thinking about going 4:10s or stock 3:73s. My only other option would be to find a stock rear axle and front diff, then sell my set up. Anyone have any connections here in Phoenix?