I build everything from an underseat boxes to full blown 6th order blowthroughs. Guaranteed to make loud noises.
Love thy neighbor with MSi Audio.
See pricing below.
Underseat boxes: Raw* empty box $1,500.00-$3,000.00 depending on needed creativity.
Blowthrough boxes: Raw* empty box $1,000.00-$10,000.00 depending on how wild you want to get.
Regular SUV/car boxes: not doing them unless the $ is good good.
Making stuff pretty and/or with subs is extra $
* raw means just a finished box with no carpet, vinyl and/or paint. You can drop your subs in and it's ready to play.