You are looking at a remanufactured Recon crank shaft kit with bearings, pt# 12576. Remanufactured decades ago and stored on the 2nd floor of an old auto parts store. This kit is correct for 1980-84 GM 173 CU 2.8L V6. The crank is factory forging number 504. New bearings included. You couldn’t have your crank tanked, magged, cut and supplied with bearings for the price I am asking.