I know some of you know i own a 87 tbird turbo coupe 2.3l and a fiero. So im in the mustang/tbird turbo forum. http://www.angelfire.com/nc2/mycoffeecan/
So one of the members posted this site that would give you 50hp increase in performance.
Download the wave file also.
If you want to check out the forum, theres a link on the bottom, i think the owners of the site own a mustang.