Whatever you do, don't put 4 12's in the back.

but yeah, rip the entire system out. it's all crap.
When I got my Z, the guys at the dealership tried to make a point that it had a bose system....I was like 'oh great more shit to rip out'

The speakers have a huge plastic encasing that leaves a really big hole in the door's and over the rear wheel wells. the door panels are a pain in the ass to take off, it takes a good 15 mins to take each off. it also is a pain to get to the rear speakers.

everything about the 300z is complicated it seems.