Thanks for your responses. Bfisher, I placed the subwoofer pointing towards the trunk because of the mounting depth it has (5.75"). To mount it the other way, it would need a very very thick spacer and I wanted a quick setup to try the amp, I'm planning to set it up correctly soon. 1stimer, you're right, for IB you need an special sub, which I don't have. My sub is a MA Audio MA80XE, as I said, I mounted it that way to try the amp only. Rudolphgreen, sounds your system rocks hard! Any pics of the 3-piece rear deck? I'm still working on mine, but I'm stuck trying to figure out the best way to build it in several pieces in order to mount it easily.