I've got a brand new 10" drum and another one that is hardly used at all. I took that one to have it machined and glad I did. It is bent so now a paperweight. Trying to find a new 10" drum is almost impossible. They don't list anything here in Canada. Apparently Wagner and Raybestos left Canada because the big bucks weren't here, this is for classic cars I was told. I have one more source Called National Moparts where I got my shroud. I lost my leg on the last purchase so I'm going to be really short now if he has one. I contacted Leed's Brakes and Great Stuff. Neither of them have a 4" brake kit.