Just joined the forum a couple a weeks ago. I'm upgrading my 2013 Ford Focus Titanium right now. Going with CDT HD61a components in the doors, a JL XD600/6 to replace the factory amp (dimensions almost identical to the factory amp), an LCQ-1 for LOC, bass roll-off correction, & equalization and a Kicker 10CVT8 (seems to be a good fit for the factory enclosure but I'm not sure about the SQ on this). I'm still looking at other options for the sub though. I think the sub enclosure is 3.5" deep inside with.35 cu ft volume (a little under Kicker's spec of .4 cu ft minimum). I want to keep everything as close to stock appearance as possible and am looking for SQ over SPL.