I just received my completed Miata hidden trailer hitch. It was custom built. When the drawbar is removed the hitch is completely invisible. It is very much over built.

The car wiring runs through an enclosed steel tube to the Teardrop. The aluminum plates are backing plates to keep bolt load spread across a larger area. I am very pleased with the workmanship.

I picked this up by barter. I traded a miata catalytic converter for it.
Completed Hitch for the Miata