Vehicle/Model	Axle Location	Year	Description	Shaft Dia.	Shaft Spline	Ratio	Ox Part No.
10/1500 Series, C, G, K, P, Blazer, Jimmy, Yukon, Suburban, Van	Front	To 1980	Dana M44, 3600lbs	33.3 (1.31")	30	3.92 & UP	D44-392-30
20/2500 Series, C, G, K, P, Cab Chassis, Pickup, Suburban, Rally, Sportvan	Front       Rear	To 1980       1975-77   To 1974	Dana 44       Dana 60HD   Dana 60	33.3 (1.31") 33.3 (1.31") 34.8 (1.37")   38.1 (1.50") 38.1 (1.50") 33.3 (1.31") 33.3 (1.31")	30            30            33              35            35            30            30	3.92 & UP 3.73 & DN 3.92 & UP   4.56 & UP 4.10 & DN 4.56 & UP 4.10 & DN	D44-392-30 D44-373-30 D44-392-33 *   D60-456-35 D60-354-35 D60-456-30 D60-354-30
30/3500 Series C, K, G, P, RV, Pickup, Suburban, Rally, Sportvan	Front     Rear	1977-90      1975-86	Dana 60HD      Dana 60HD, Full Float	38.1 (1.50") 38.1 (1.50")   38.1 (1.50") 38.1 (1.50")	35            35              35            35	4.56 & UP 4.10 & DN    4.56 & UP 4.10 & DN	D60-456-35 D60-354-35   D60-456-35 D60-354-35

 NOTES:

               *             Non standard performance upgrade.

               **           Axle spline must be determined for correct model selection prior to ordering.

               ***         Newer OEM Dana 30, Dana 35, and Dana 44 ring gears may have 7/16 bolts.  The OX locker flange holes must be

                               reamed larger to suit if necessary.  The carrier flange is case hardened and can not be "hand drilled".  Precision

                               reaming using a machining mill must be accomplished.

               ****       In many applications several differentials and axle shaft variants were used.  Verify differential and spline count

                               prior to ordering.