1990 Chevrolet G30 Ring and Pinion Set RWD - Dana 70 Rear - Ring and Pinion Set - 3.73 Ratio - 5/8 in. Offset - 29 Spline Pinion - Fits 3 Series 4.10 & Down Carrier - Rear guaranteed to replace your current 1990 Chevrolet G30 Ring and Pinion Set RWD - Dana 70 Rear - Ring and Pinion Set - 3.73 Ratio - 5/8 in. Offset - 29 Spline Pinion - Fits 3 Series 4.10 & Down Carrier - Rear. 1990 Chevrolet G30 Ring and Pinion Set comes new OEM 1990 Chevrolet G30 Ring and Pinion Set aftermarket new 1990 Chevrolet G30 Ring and Pinion Set of remanufactured 1990 Chevrolet G30 Ring and Pinion Set RWD - Dana 70 Rear - Ring and Pinion Set - 3.73 Ratio - 5/8 in. Offset - 29 Spline Pinion - Fits 3 Series 4.10 & Down Carrier - Rear.