3.42 to 4.10's????
 

I am considering changing from 3.42 to 4.10 gears. Ninety-nine percent of my driving is in town and rarely take my truck on any trips. My main concern is finding someone reliable to do the work. I have heard a few stories where people have had bad experiences after having their gears swapted out. I live in Tyler, TX and don't mind driving to the Dallas or Shreveport area if need be to have it done right. So I was wondering if anyone had any suggestions on where to take my truck for the work? I have heard some say you can have the dealership do it and maintain your warranty but none of the dealerships I've talked to here in the east Texas area will touch it.