If anyone is looking to trade a pin for a very high end subwoofer, I just had my one owner JL Audio F113v1 factory refurbish/recertified. It has a brand new 13w7H driver ($1500), factory re-capped amp and the latest v1 updates applied. It comes with a 1 year factory warranty and all the original accessories/manual. The F113 is an absolutely amazing sub - a longtime gem in JL Audio's home lineup.
The new F113v2 units are $5k. I have mine listed on ebay for $3k, but would much rather trade it towards a 90s or newer pin (plus cash if necessary) so I don't have to ship this beast again.
Shoot me a PM if interested!