Not sure where to put this (be kind) but I received this response to inquiry today:
Nathan-Wavetrac <nathan@wavetrac.net>

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Today, 1:05 PM
K F

K,
No sorry those are no longer in production.
We are not planning on making another batch unless a dealer of ours commits to a batch of at least 10-20 units.

Nathan Vieau
Technical Sales Rep.
Autotech Driveline
Wavetrac Differentials
www.autotech.com
www.wavetrac.net
1(800)553-1055 ex 15

Maybe a group buy would be in order? I have no idea how to arrange. Thoughts?