i've got an 86 gt vert, and just purchased a new power amp, but its much bigger than my old one and won't fit under the seat. i know most people mount them in the trunk. if i put it on the floor of the trunk, then i can't access my spare tire. so i guess i'm asking for some other options

 

on the back of the seat in the trunk?

 

on the subwoofer speaker box?? i thought under the seat was bad because of heat problems??