Your money may be better spent with a better set of shocks/struts and springs, swaybars as well if your budget allows it. I am not sure what you have now, but if you have stock parts, there is a lot of room for improvement. I had a strut tower brace before I put on my supercharger and did not notice any change. For the cost of a strut tower brace and a hood, you could get some nice parts. The 05+ cars have a pretty solid chassis, they do not benefit as much from strut tower braces as previous mustangs.