This is a well-used '68 C8OE block with the extended cylinder skirts designed to accommodate the 302's longer stroke. That is what makes it different than a '63-'68 289 block. Decking and align boring were not needed. A 0.030-inch overbore has been accomplished. New freeze plugs have been installed. Screw-in oil galley plugs have been installed for reliability. This is all low-buck machine work that accomplishes a lot.