What 7secondchevelle has up for your consideration is a new full set of Michigan main bearings for Oldsmobile 303 and 324 GMC engines. This is 1950-53 303 and 1955-56 GMC 324cid engines. Bearings are .020 under in size. Bearings have some typical discoloration from decades on the shelf but are in good condition. Please do your research before bidding. Sold as is. No shipping to P.O. Boxes or APOs. Must have physical address. I do not ship directly out of the USA. You can use eBays global shipping system if needed. I will not be held responsible for non or under insured items. Local pickup is always OK. Please email with any questions or for any additional information. Thank You and God Bless.