They ROCK. I own the RC620s, the RC820s are a close cousin, but they're a drop-in fit for the Contour. Mount the tweeters on the door sails (tip: order replacement door sails NOW, while they're still relatively cheap) and angle them so that they cross just behind the rearview mirror for good imaging. The crossovers will fit behind the glove box so that they're easy to adjust. Oh, one caveat: you need at least 20W RMS to wake these puppies up, 40 watts or more per channel is ideal.
Originally posted by ARJoel:
This 5x7/6x8 component set:
Specs:
Nominal Size 5 x 7"
Recommended Amplifier Power 20-275 watts
Nominal Impedance 4 ohms
Frequency Response (3dB in car) 50-20kHz
Sensitivity (1 watt (2.83v) at 1m) 90dB
System Type 2-way