He'd picked up 2 sets of Polk Audio components from a buddy as well as a Taco Tunes integration crossover unit....I provided the rest.
Goal here was to have the audio look/sound as if it was a super premium option from the factory...so we retained the headunit (hence the TacoTunes module) and only added a Digital Designs 6" woofer under the seat.
He didn't opt for sound deadener, so I use some duct tape to help seal the speaker adapters as best I could without going overboard.
This thing definitely sounded pretty damn good once done...and that little 6" woofer can get down!