mpeach1976,
Yes, "skyline247" is correct that you want the shifter and the bracket. When you remove the stock bracket you will see that is not very supportive. The problem with the stock shifter assembly is that it is a remote shifter (that is, it does not sit on top of the transmission like shifter did on most of the older style transmissions). The Barton shifter uses some better guides and the 2-post bracket give a very solid connection for the support of the shifter box.
I had a Barton shifter and 2-post support and really liked it. I went to an MGW (Race Spec) just because it is an awesome piece of engineering and I just had to have it, lol. I am not a track guy (drag strip or race course), so I just tried out a couple of shifters until I found one that suits my simple toodling around in my GT. Comparing the Barton and MGW, I have to say that I prefer the shorter throw of the Barton shifter and the more 'robotic' feel (some people say it is notchy but it is not notchy, just machine-like. But I like the MGW very much now. In any case, I think you'll like the Barton system.
Chris