I want to buy a Delphi Sky Fi system for use in the car and at home, but after I buy the head unit, car kit, FM modulator, home kit, and car installation, the expense of all the assorted add-on doodads just makes it a little too pricey for my blood. a) Is there such a thing as a car kit with line level outputs for a car stereo aux input? Idunno why the only two ways to get audio in the car is with a cassette adapter or an FM mod. Seems like a car kit with RCA outputs oughta be an option for those with car stereos that don't have a cassette player, but do have aux ins. b) From what I've seen, the overall price for all the gear I listed above, plus installation, comes in around $400. Are there ever sales, rebates, packages, etc that I should look for to save a C-note or so?