I went back to Best Buy and asked for them by name and guess what? They had them. I also bought an inexpensive set of Pioneers mostly for fit of the adapters. With a little patience and bending I am satisfiedd with their fit. I'm going to upgrade these speakers to something better here in next few days. I went to gnttype.org to get which color rear speaker wires are + and -. They give the colors but not which is + or -. Before I bring these back I want to make certain I have them hooked up correctly. Is having proper fade and balance a known way to determine this? Thanks again for all of your suggestions. Drew