don't laugh my rear shelf had been butchered well not butchered but cut by my cousin to sit 6 inch speakers in it, i was thinking about going 6x9 but would either just box em and bolt em on or get extenders and hope they sit out of the current holes. The current holes are cut neatly but it is actually illegal to cut it but it was done before it became illegal i think. I have 6inch three ways in the front doors and the standard speakers in the front and two holes in the rear where my cousin had his speeakers all the wiring is still there though.