I have one flywheel (12" clutch bolt pattern, 14.25 Diameter) that will fit Chevrolet small block and big block engines without counterweight. Not correct fit for 400 small block or 454 big block. Check out the pictures. I have a flywheel resurfacing machine and can resurface this flywheel for an additional $60. Call Mike at 209-30four-4557 with any questions. Check out my other parts with the "more ads by this user" link. Thank you and God bless.