I have a set of original GM 12 bolt 4.10 gears. The ring gear has a part number of 3862526 and is dated 3-70. The pinion has a part number of 3862514 and is dated 4-70. The tooth count is 10-41. These do not have any chipped or damaged teeth and don't appear to have much wear. These have been sitting for close to 20 years. $250 shipped or best offer.
Please PM me here on the site if interested.
Thanks SYC,
Matt
