Well, the switch I already have. But the amps, the wiring, the speaker to line level converters, the replacment speakers I'd need to go w/ the amps...it snowballs pretty quick. One thing at a time. If I a)get the Outback and b)do the full wire, I'm definitely going to stash the amps under the floor flaps in the cargo area instead of under the driver's seat where I have them in the Forester. I think later this summer or early fall as the Forester has 228,000 miles on it now ('99). I'm not sure she'll last another winter, but if I clear an even quarter million, I'll be happy.