put them in a box in your trunk... if you dont want to cut your cargo cover then you're limited with choices...
maybe if you want to fab up a box that goes on top of your cargo cover to hold the 6x9... fiberglass something?
personally i wouldnt go that far for rear speakers i say just stick with the stock 6.5"
personally i prefer my soundstage to come from in front of me... and i use rear speakers for " rear - fill " on some of my previous set-ups ive eliminated the rear speakers all together.
it all depends on what you're looking for
