I drive a 1995 Dodge Caravan Sport. Performance-wise, its mostly stock except for a cold-air intake and a complete custom exhaust system, but its faster than it looks for sure, the ULTIMATE SLEEPER car. It looks like crap because about 70% of the paint peeled off, leaving primer, and the remaining 30% is spread randomly.
Its got a killer sound system though. I started off with a single 15" woofer and a 1000w amp, but now Ive got two 2000w 15"s and two 1500w amps. Of course Ive got a crossover and upgraded mid-range and tweeters, or else it would sound like shit. I installed Dynamat and small pieces of foam wherever it rattled.

Every single thing installed was done by me alone. Okay, I needed a little bit of help with the exhaust, but yeah...

edit: Forgot the pics. Old one of the system though, too lazy or stoned to get new ones. BTW, the wires are all stashed, and the install is cleeean now.