Looking for a gear vendors unit to mount behind an m20 (27 spline).

 

You and me both! Good luck in your search.

 

I have a Laycock unit out of a suburban. It's from a company called Maximum overdrive.
I have the unit and the controls that go with it. All you need is the adaptor. Maximum overdrive sells them cheaper than GV sells them. I bought a turbo 400 with it attached to it.
I needed the adaptor for a GV that a purchased previously. $650.00 plus shipping.