I dont remember where, but I actually saw a 4RUNNER with 2 tens in it that were in the side compartments of the back. They took the little door off built the frame for the subs, had it wired through there, and then you dont ever have to worry about removing them so you have extra space. Just put the amp under the rear seats, or the front seats are where my amps are. I guess, If you wanted to only put one sub in, you could turn the other compartment into the amp holder, I have seen the amps in there before also.