Just put this bracket on my Boss and the difference is absolutely incredible! Ever since I bought the car last year, I blamed myself for the missed second to third gear shift at 7200 rpms. Hardest part of install was getting my car off the floor! Don't waste your money on a shifter!!!
It is literally like having a brand new car having this installed. I paired this with a Steeda Tri Ax and I couldn't be happier with the overall results. Much more positive shifts (like everyone says) but nothing compares to how drastic the changes are the minute you start driving.
My advice: if you're thinking about the bracket and 'maybe' the shifter do both at once. It's more up front but once you get into the install you'll appreciate having to open all the stuff only once.