I bought all Eclipse speakers and amps for my wife'* `88 Grand Prix. I needed "American" drilled front dash coaxials, and the top of the line Eclipse 3-way 6x9'* in back. Powered with Eclipse amps after amps by Coustic failed. The head unit was a Pioneer cassette unit with a Pioneer Premiere CD changer.
We sold that car in April and replaced it with a 2001 Grand Prix GT with the Bose factory system, and all I can say is that the aftermarket Pioneer with Eclipse speakers and amps blows away the stock Bose.
Some day I'll go aftermarket with her GT, and I'd definitely go Eclipse again.
Incidentally, Eclipse is a division of Fujitsu-Ten, and is unrelated to Klipsch, who doesn't make any automotive products at all.
97 SE, teflon wiper blades, Dunlop Sport A-2 tires, Leather steering wheel cover, Pioneer DEH-P480MP mp3 CDRW head unit, Pioneer 12-disc changer, iPod hookup, Boston Acoustic 3 way 6x9'*, Boston acoustic separates in door pods, Alpine 4 channel amp in trunk. Magnaflow dual outlet muffler and Ractive stainless tips. Autozone rice pipe and K&N 4750 intake kit. Clear corner lights. Energy Suspension end links.