Well, the fascination is this:

* 1 farad cap (helps a little with light dimming) = $60-70 (if you pay anymore, I'll send you some KY jelly )

* deep cycle battery (for extended playing with engine off) = $120-150

* new or rewound alternator (best results) = a lot more de to labor because the alternators on Civic's and Integra's are hard to get to