I've got a composet from RF (punch) in de front, Punch in the rearpanels,
RF Power coaxials on the back and a 38cm woofer in my trunk.
Upcoming project:
- RF Power composet in the frontdoors
- 38cm subwoofer from RF in the trunk
- 2 nex amplifiers (one for the composet and one for the sub)
I'll show pictures when done 
Just post it to give ideas and explain upcoming problems...
Problem one: Need a heavier battery ...