It would be hard for me to justify a sub upgrade to the wife. She keeps the bass turned down as it is.
I was thinking of approaching the door speakers, as if they were component speakers, and was going to put component woofers in there. I was also approaching the doors from my experience with 6.5s sounding cleaner than 6x9s.
I may look into the kicker upgrades.
I am also still looking into the best way to add an amp for the dash speakers.
Black 2013 RAM 1500 Big Horn 4x4 QC with 8spd, Hemi, air suspension, 3.92, 8.4AN, Alpine audio, anti-spin rear. 17" rims, and 3x Infinity Kappa 32.9 in dash location.