Build quality is top notch, weight is impressive, and functionality is supreme.
Installation was easy enough, however, the instructions provided by JBR were for Mazda's WITHOUT the electronic parking brake. So, I had to look up separate instructions online to be able to correctly remove the shift boot.
I've driven about 60 miles since installation. It has stayed tight, lined up, and secure without having to make any additional adjustments. I also added the rings which I enjoy, as well!