Looking for 39~40mm Led drop in

[trailblazer]

I found an incandescent turbo head I had purchased from Cabelas several years ago. I took it apart and removed the lamp assembly and thought it would be cool if I could find an led dropin to replace it with. It measures approx 40mm wide and 54mm deep. I searched DX but did not see anything. Does such an animal exist? It threads onto surefire G series lights.
thanks,
tom