I think I can make the 14th. I'm sure my system doesn't hold a candle (performance/volume wise) to your enthusiast setups, but now that I've got it put back together and working again (long story), you might enjoy seeing/hearing some "old school" equipment:
1988 BMW M3
Front Amp - a/d/s PS5.2
Rear/Sub Amp - a/d/s PQ20.2
Front Speakers - a/d/s 235is
Rear Speakers - a/d/s 335is
Subwoofer - a/d/s RS10
Head Unit - Alpine CDA-X100 (I know, not exactly "old")
I've been out of the car audio game for a few years and I'm looking forward to seeing some of what's out there now.