8" housings are available in 2 3/4" or 3" tube and we offer billet large or small bearing housing ends to accomodate any 8" Ford appropriate combination. Upgrading to 3" tubes makes the 8" much more adaptable common aftermarket suspension brackets and upgrading to large bearing housing ends allows for a far larger axle bearing and opens up available brake offerings to anything that is available for a 9" Ford.