If you are going to put a after market speaker under the dash it needs to be a super low profile one because it will hit the dash cluster and the heater controls. I'll look and see if I have a spare support.
No, sorry I don't. Had some done in the summer with a professional photographer but they all have family in them. Never thought of it until after that I should get them to do one by itself. They sure turn out alot better than mine do.