I could use some gears for my 10 bolt/12 bolt combo. I'd prefer 5.13s but 4.88s would work as well. The 10 bolt gears need to be for a 3 series carrier (2.73 and up). The 12 bolt gears need to be for a 4 series carrier (3.73 and up) or come with a carrier. I'd prefer a set but individual would probably work as well.