Etlsport,
I like tight accurate base, so I built in 2 eight inch subs (Polk db series) with sealed enclosures into the spare tire compartment. I also had room in there for a four x 70 watt amp for my full range speakers, and a two x 100 watt amp for the subs. It's balanced well, and is all the volume I need inside the VX. I'll take some pictures tonight and post them in my gallery for you.

Randy