Edited the model for a 6th gen Mustang to work with the reverse lockout ring. The mounting hole is also sized for the correct 1/2 inch threads. You just need a 1/2 x 20 tap for the threads. I printed mine at 50% infill except for the thread stud which I used 100% infill.

Since this is made out of PLA it does resonate a lot, but you can hear your gearbox and has a nice "click" to it when you shift.