IF your wanting to UPgrade and eventually maybe expanding the whole system this is more of what I would look into. These are just beginner level lines.
They have a very similar connector that can be modified to fit easily, but I doubt you will be able to find some. The Bose speakers do have a larger magnet. I also know that plastic speakers don't sound good either.
Right rear door speaker has been dead for a while. Finally looked up how to take the panel off and pulled the speaker. A kick test jumpering it into one of my ham radio rig's audio out greeted me with absolutely nothing.
So a quick look here and on the web leads me to the knowledge that any 6.5 inch speaker would work. Any recommendations for a good speaker to use with the stock head unit besides whats already in this thread? If the price is good, I might as well replace all four. May even replace what's in the Silverado.