K, so i got a predicament.
I have a 1995 Toyota Avalon, which has a massive trunk, and I have two 10" subwoofers in there right now, which are facing the rear of the car, against the backseat. I have two 12" Subs I want to put in there also, but I dont know how i should put it. (This is if they fit)

I want to put the 12"s (in a box) against the backseat where the 10"s are now, and maybe put the 10"s in front of it kind of, laying down, where they are facing up. let me know what i should do.