This based on a 231 transfer case. I've regeared 3 of mine in the past and it's very accurate by GPS.
You can order Mopar speedogears by simply changing out the last 2 numbers of the part number and putting in the pinion size you need or find an aftermarket one.
33" 32" 31" 30" 29" 28"
3:07 SG26 SG27 SG27 SG28 SG28 SG29
3:55 SG31 SG31 SG32 SG33 SG33 SG34
3:73 SG32 SG32 SG33 SG34 SG34 SG35
4:10 SG34 SG35 SG36 SG37 SG38 SG39
4:56 SG36 SG37 SG37 SG38
You can order Mopar speedogears by simply changing out the last 2 numbers of the part number and putting in the pinion size you need or find an aftermarket one.
33" 32" 31" 30" 29" 28"
3:07 SG26 SG27 SG27 SG28 SG28 SG29
3:55 SG31 SG31 SG32 SG33 SG33 SG34
3:73 SG32 SG32 SG33 SG34 SG34 SG35
4:10 SG34 SG35 SG36 SG37 SG38 SG39
4:56 SG36 SG37 SG37 SG38