Need to know if they are 13" or 14" then. If they are 13" you are stuck. Can't do disks with 13" wheels. You can do 14" if you can find the right wheel that will clear the Kelsey Hayes reproductions that SSBC makes. You need 10" drum spindles for that conversion (I have a set that I saved from the scrap heap to help someone out who wants to use the kit that SSBC makes, I have them on my Dart with a way to powerful aftermarket booster in a way they work too good ;) ).