One of my biggest projects with the TR6 was to add a J-type overdrive unit to my standard transmission. As daunting as that seemed, but really was not, my challenge now is how to mount this thing to my old style A-type frame (1971). I searched the web high and low and there are relatively few options. I initially built a home brew mount similar to the first image below but wasn't convinced it was robust. The big three suppliers in the US don't offer any option so I went oversees ultimately to Moss Europe. They do offer a professionally designed bracket that I liked so I pulled the trigger. All-in with purchase price plus shipping to the US was about $180. Quantumechanics sells the same or similar unit here in the US but at about $200. Surprisingly, I initially made a request to Moss US if they could get the European unit and sell to me locally. They said sure but suggested the special order price and shipping would total $280 so I passed and purchased the unit directly. Very pleased with the outcome, see second image for Moss Europe unit.