I haven't finished the system yet but I welded a frame and made a hinged compartment for the amps. The tire is held down with a strap that mounts to the factory seat belt and seat mounts for safety. I didn't want to go crazy on the bass I like it natural acoustic sounding so I did an over sized 11" shallow sub in a sealed enclosure. There is a Reference series Kenwood four channel amp, bi amped to the front separates and a mono for the sub. The rear speakers are 7" two ways that are run on deck power for rear fill. The head unit is a KIV-BT901 which is a iPhone centric receiver that also does Pandora. The system sounds great. I also used Hush mat on the floor and door panels. I'm going to finish it in carpet to keep the cargo area as usable as possible. I'll post some more pictures when I get it done.

 

Looks awesome. I'd love to have a little bit more bass in mine but there isn't much space to work with if you keep the backseat.