Just installed some Blaupunkt PCxi573s in my supercrew. Sounds good with more bass and definite improvements in highs. These speakers are very sensitive (94dB), so the stock system actually plays at higher levels clear as a bell. I went to the crutchfield website and picked them up for a little over a bill and a half! I installed them with a little help from jtray's step by step (Thanks!) and two Miller High Lifes. Sweet!!!

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2001 Supercrew, Chestnut w/ Harvast Gold Accent,4x4,4.6L(Romeo,MI engine),Tan Leather Captains,ASC Auto Moonroof,CD Changer,Skid Plates,3.55,Class III Trailer Tow,Pendaliner SR,265/70/17 Yokohama Geolandar AT Plus Tires,ARE LSII, 4 Blaupunkt PCxi573 Three
Way 5x7s.