Hola Wondering Tom Some people dp not want to change the complete front lower assembly because they would need to in order to have this feature on the 1966 and newer Imperials. Some people realize they would need two different sized spares until all all is finished if they do it in stages ( one with the stock 9/16 holes and one with 1/2 holes ). Some people realize the rear axle assembly would also need attended too and do not want too. Some people realize if they find a 1967 and newer rear axle they will need to have the braces from a 1966 and older axle assembly placed on this new 1/2 studded unit to keep everything in place since they have the two piece drive-shaft. And some are ah wondering as you. Rodger & Gabby Colo Spgs '47 De Soto Custom w/Fluid Drive & passenger door mounted swamp cooler '62 Crown Coupe w/std A/C & Auto-Pilot '66 Le Baron w/dual A/C & reverbed AM/FM '70 Overlander - InterNational Dbl '70 W100 w/318, NP 4 Spd, 3:55 & Short Box '77 D150 w/360, NP 4 Spd, 12 Bolt Axle, OEM Buckets & etc ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm