You have to fabricate a bracket up like me and Brooklands did!
Might not be to everyones taste but whatever happens you have to make a drop down bracket.
This one is not actually a rear bracket but a front one.
We just found the rear one stuck out so far there was a danger of not being able to shut the garage doors.
We are starting work on the front one very soon.
This will involve a drop down link with the same thread as OEM (as the front bumper covers it by about 3"). so we can then
either screw in the one that came with the car, or have a bling one.
This is the rear one and it has 3 positions.
At present it is set to be in as far as possible!