I don't have the side panels in the rear in my Blazer. I would like to put in some 6x9s in the rear. Say somewhere around the rear ashtrays, but not be so intrusive that I could not fold the rear seat forward. Pics of a box design would be great. I don't really want to go with the normal hacthback stlye boxes but I guess I may have to start there and modify them. I'm running on two sets of 6 1/2s up front and a dash center. Not very complete sound. Thanks for the insight.