B&W Matrix HTM 165mm Mid-bass Driver - Replacement Options

Am in need of a discontinued B&W part number ZZ3301 165mm kevlar driver or substitute.  This is 1995 vintage.  It has an aluminum magnetic shield over the magnet assy so I suspect the actual driver (less the shield) was simply another 165mm B&W stock driver, perhaps the ZZ5622 from the Matrix 805, et al.  The HTM had a 88-89 dB efficiency.

I fried the voicecoil and have doubts that anyone's attempt to repair it would lead to a device as good as the original or one that would be cost effective (relative to finding a good working substitute).  I don't want to dabble into non-B&W substitutes as I'm wanting to preserve the original HTM properties/voicing.

I'd welcome any thoughts, leads, Thiele-Small Parameters, or knowledge on this matter.  Yes, I have a couple of ongoing leads shopping at the usual places (eBay, Usaudiomart, Canuckaudiomart, Craigslist...).