When I first took delivery of my Boss last Summer I was getting some grinding when shifting into second and fourth gear. I did some research on it and found, like many of you, that Ford released a TSB recommending changing the stock transmission fluid to a lighter fluid. I also ran across owners installing a shifter bracket on their Mustangs with some mixed results. After seeing photos of the stock and aftermarket brackets I decided that I would eventually buy a bracket and give it a shot. My car shifts just fine outside of the grinding I experienced when new but I have missed a couple of shifts at high speed and torque conditions on track. Specifically shifting from fourth to third and ended up in fifth and from third to fourth and ended up in sixth. So I thought the shifter bracket would be inexpensive enough to try and see if it helped. I've only put a couple of hundred miles on my car since installing the Steeda bracket and the shifting now feels a bit more precise and mechanical. I'm talking about a minor improvement and nothing earth shattering here. It will be interesting to see if there is any improvement at the track.
There were three brackets I was looking at and all three are slightly different. I purchased the Steeda because it came with soft and hard bushings and I used the softer one. JHR sells one and you can order either the soft or hard bushing and Barton sells one that only comes with a hard bushing. The MGW shifter comes with a new shifter bracket necessitated by their design change and Steeda offers their bracket with their shifter. If I was going to order one now I'd buy the JHR with the softer busing and save a few bucks.
Installation was easy as long as you can jack your car high enough to get your whole body under the car or use a lift. Once my car was on my Race Ramps it took me about 10 minutes to make the change. Here are links to the three brackets I mentioned and a video from Barton on installing their bracket.
Bottom line is if you're not happy with the shifter changing out the weak stock bracket is an inexpensive and easy place to start along with a fluid change.
JHR
http://www.hecticparts.com/products/JHR-HARDCORE-BILLET-SHIFTER-MOUNT-FOR-2011-MUSTANG-WITH-6-SPD-TRANS.html
Steeda
http://www.steeda.com/store/mustang-shifter-base-bushing.html
Barton bracket and video
http://www.bartonindustries.com/2011-MUSTANG.html
http://www.youtube.com/watch?v=1hjZkbK3vls&feature=related

There were three brackets I was looking at and all three are slightly different. I purchased the Steeda because it came with soft and hard bushings and I used the softer one. JHR sells one and you can order either the soft or hard bushing and Barton sells one that only comes with a hard bushing. The MGW shifter comes with a new shifter bracket necessitated by their design change and Steeda offers their bracket with their shifter. If I was going to order one now I'd buy the JHR with the softer busing and save a few bucks.
Installation was easy as long as you can jack your car high enough to get your whole body under the car or use a lift. Once my car was on my Race Ramps it took me about 10 minutes to make the change. Here are links to the three brackets I mentioned and a video from Barton on installing their bracket.
Bottom line is if you're not happy with the shifter changing out the weak stock bracket is an inexpensive and easy place to start along with a fluid change.
JHR
http://www.hecticparts.com/products/JHR-HARDCORE-BILLET-SHIFTER-MOUNT-FOR-2011-MUSTANG-WITH-6-SPD-TRANS.html
Steeda
http://www.steeda.com/store/mustang-shifter-base-bushing.html
Barton bracket and video
http://www.bartonindustries.com/2011-MUSTANG.html
http://www.youtube.com/watch?v=1hjZkbK3vls&feature=related
