does your back seat fold down? my friend had 2 type Rs and his subs faced foward with the port on the side of the box, it got pretty loud for just being type Rs
im not sure wjay ohms it is but do you think this would be a good amp
http://cgi.ebay.ca/New-Legacy-2-Ch-2000-Watt-Car-Stereo-Amplifier-Sub-Amp-/160604089381?pt=Car_Amplifiers&hash=item2564bfec25
get a mono block amp not 2
what he said ^^
its a very expensive task to lay frame.. and yeah you will have to do a LOT of relocating, and sacrifice lots of goods. i had to get rid of my AC and Heater core. almost lost my ABS too.