I have a brand new in the GM crate T56 M12 manual transmission correct for 01-04 Corvette Z06. Part number is 12589534 which replaced 12561852. These are impossible to find in NOS it was discontinued from GM 10/1/2018. As you can see in the photos, the crate was just opened for the first time when I took these photos. Confirm fitment and ask questions before purchase. Pickup is preferred but will ship if buyer arranges transportation.