Pro Gear. They did both my axels. There number is (858) 571-1158. They also have a web site www.progeardifferentials.com Changed my dana 44 from 3.60 gears? open to 4.10 w/power trax locker. and my dana 60 to 4.10 w/limted slip. hope this helps
Try MIT in El Cajon, by Gillespie Field. The # is 619 579 7727. I went from 3.73 to 4.56 (GM 14 Bolt) and added ARB lockers. These guys are the premiere off road drivetrain shop in San Diego. Call and ask for Jeff.
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