Just got word that my shock towers must be the cause of it not fitting. They took the piece back and tested it and it fits on all of their F-bodies. Just wanted to post this so everyone can be advised that UMI DOES make quality parts and it wasn't their fault. Even more, they have some of the best customer service I've ever dealt with. Very patient with me the whole time, excellent communication, etc.
All in all, I would highly reccommend them if you're looking for performance parts.
www.umiperformance.com is their site.