Where can I mount this amp?

NismoZ70

.c2 - thats a pretty sweet set-up. I wanted to do something like that in my car however I am a bigger guy so my seat is all the way back and is even angled quite far back so there is very little room to put anything back there and me still be comfortable. Thought about going behind the passenger seat but again with some of the friends I drive with it might be difficult. I really wanted that set-up though so that it wouldn't be taking any room at all.