So I'm a little confused. I've got 9" manual drums in my '71, and I want to put in power discs, but all the kits that I seem to find are for the 10" drums. I checked on p-s-t.com, sumitt, and Mancini, and about the only thing that I've found that I think will work is at Mancini, http://chucker54.stores.yahoo.net/disbrakconki.html , # SSBA153-1. Has anybody used this kit? Will this work for my 9" drums? Is there anywhere else that carries the kit that I need? Any help with this would be great.