well for front speakers you want 6x8 but 6x9s are rear so if you want rear speakers look at infinity. I dont have rear speakers cause i have 6.5 components (separate woofer/tweeter) at 125w rms haha
97 Mercury Grand Marquis LS
Performance: Magnaflow Mufflers, 180* Thermostat, 22C Spark Plugs, Zip Tube, Marauder Airbox, XCal 2 w/ 93 Octane Tune, FRPP Spark Plug Wires, JMod, 70mm TB with P&P Plenum
Appearance:Alpine CDA-9856, American Bass SQ780, Image Dynamics CTX65CS, Dynamat Xtreme, Marauder Exhaust Tips, Autometer Tach on A-Pillar Mount, 2 RD Audio Alphamax 15s in 9.1 Cubes @ 35Hz, Team Cactus Sounds 5kw