I just re-read this thread...are you trying to buy or sell a stock factory subwoofer enclosure? Based on the title of this thread, it's now sounding to me like you're looking to sell your stock enclosure in order to purchase the BSW sub enclosure.

If your simply trying to sell a stock enclosure, I hope you're not actually looking to make some huge profit, let alone anything near triple digits. I got mine for absolutely free, minus $20 shipping. After listening to the stock enclosure, it's absolutely useless and the generic 8" in a .4 enclosure I made sounds FAR better. The stock subs bottomed out at hardly any volume, and not to mention that if someone doesn't have the BMW factory amp to power it, it's even more useless until you spend around another $80-$100 at minimum to install an aftermarket amp. Before I modified the enclosure, I tested it out using my Pioneer 300 watt monoblock amp to run the factory sub enclosure...muddy and SLIGHT thump feel at best. The only real use for the factory enclosure is if someone plans on modifying it to fit another type of subwoofer like a Kicker L5. There is a thread on here which documents exactly how it's done.

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