Ford Sale is a NOS Early CHAMP NO CHANGE Aluminum Center Section. This is the 11 bolt center 12 1/4" diameter and 3 3/4" wide. This is the same as 3/4 Ton early Ford axle housings. Winters Performance makes Adaptors to fit this center section to 1935 to 1948 Ford axle housings. Or, they also make steel bell axle housings to fit this center section. Just google Winters Performance or see Rodder's Journal # Seventy four for the whole story. New Aluminum Center Sections cost $849.99, so you can save a ton of money on this brand new one. Please ask questions by emailing me at my email address so I have your email to respond. I don't respond to messages on the Hamb. Thanks. My email is [email protected]