I crammed 2 15's under my rear bench...it could be louder it is what it is with the amount of airspace I have to work with...I don't have any pics right now as I am posting from my BlackBerry..if you search I have posted before, next time I get near a comp I will add some.
that thing is mean, I am still kinda new here, and have gone through the entire hooptie build, thats what brought me to the site...but who is chicken
edit: mis read....
Yeah I have always that it is bad for the amp, and that it will shake stuff lose and stuff, and stuff....I have never had any of my amps mounted to a box...
I used to know Bob quite well back in the day....about 10 years ago...he had the first set of VFLs I ever heard in a SPL box in a Toyoda 4 Runner, it was a little loud for 2 twelves! Looks like a good time was had....
There is a few members with box calculators in their sigi, just do a search for box calculator, and enter your box dimensions, and it will give you a port size for the tuning feq you want..