So while having some high-end components up front and a sub in the rear is usually a good way to go, my access cab Tacoma pickup does not have room for a sub without doing away with a rear seat (not gonna happen). As is, there is room for 6x9's (or 6.5's) and tweeters in the front doors, and 6.5" speakers in the rear doors...the rear speaker mounts are about 24" away from the driver's head rest, so they are actually about the same distance from the driver as the front speakers if not closer (if it matters). I have an Alpine CDE-123 deck, Alpine MRP-F300 amp, and on a whim bought a discounted pair of Polk MM691 (I know, 6.5's have better sq, but I'm trying to make up for not having a subwoofer). My plan was to mount the mm 6x9's up front and buy a set of db6501 components and mount the speakers in the rear running off the amp, and mount the tweeters in the front door and run them off the deck. I have been slowly realizing how much of a novice I am at this stuff, and have been tossing around the idea of just bridging the amp and ditching the rear speakers, putting coaxials in the rear with db1001 tweeters up front and keeping the 6x9's, or returning the 6x9's and buying a set of mm6501 components and using just those--but then I loose the bass of the 6x9's...well, anyone here feel like helping out a newbie? I'm just trying to do the best I can without a sub and without going broke.