[Shop-talk] gear vendor / laycock J-type od

[Brad Kahler]

I was doing so research for adding a Gear Vendors over drive unit to our 
motorhome and found that they list it as a Laycock J-type overdrive.  
 From what I have read it sounds like they bolt a J-type overdrive to an 
adapter for the TH400 transmission.

This may sound like a dumb question but am I correct in thinking this 
would likely be the J-type used by Triumph with some possible mods done 
to it?

Did they make more than one J-type?