Im a car audio geek myself. Glad there are others abound!
Ive been dabbling with it for years. I start to lose interest for a while, then I get the bug again. I currently run (2)Alpine V12 Expert amps (900 watts RMS and 320 watts RMS), an Eclipse 5423 HU, JL XR components and (3) 10" JL 10W6's in a sealed box. Sounds great, but I always wonder if the grass is greener...
Since Im an engineer by profession, I dig all aspects of it...right down the the resistance calculations and box design, so if anyone has questions and thinks I may be able to help, feel free to ask!