I have for sale a good used Dodge Chrysler Plymouth Mopar 8.75 8 3/4 3.23 gear set dated 11/18/1970. These are for 489 case. I purchased these in a parts lot, they do have some surface rust on pinion gear they should clean up with a scotch brite pad. Sold as is $85 shipped in the US. Local pickup is available in the San Antonio, Tx area Sold 1st come 1st served no holds get it before it's gone.
