dnewman04 you beat me to it, avoid that location. My suggestion save up buy a decent quality 6" mid and tweet set with crossover's included. Take your facotru 6x8 or 5x7 trace it out on a piece of wood. Cut out the piece that you have traced and mount it in place of factory speaker. Take the 6" mid mount it and place the tweeter below the mid for better imaging and definately amp the set as the factory unit will heat up and the distorted signal will damage you tweeters if you just hook them straight up to the head unit.

This type of install will look clean as you will not have to cut any factory panels which can be very costly to replace, and mount the crossover's in the door and insulate them so that they don't get water damaged.

Good luck!

1999 Silver Frost Contour SVT 2690 of 2760 Born 08/13/1999 Sony Mobile ES CDX-C90 Deck 6 1/2 Infinity Kappa Perfect mid & tweet set, 2 12 Infinity Kappa Perfects JBL P.600.1 for Bass, P.180.2 for front stage.