Just installed my new amp and sub today. I wasn't sure where to mount the amp at first but finally decided to attach it to the back of the left rear seat. The sub sits in a custom box on the right with the speaker facing down for a gain of about 3db. Set it up as a monaural amp for the sub but may change to a dual mode system with a bridged sub and 100microfarad capacitors in the front speaker wires. I know some people don't like Sony XPlod stuff but I'm quite happy with it.
Jonnie