I am quite surprised how quickly the aftermarket has stepped-up to the '05 GT. The didn't get serious with the mod motor Stang until the 99GT came around. Even then, the mod most recommended was supercharging.

I drove a '05 GT and couldn't believe is was a Mustang. It's 100% improved and drove like a car you keep for a long time.

 

tri-ax short throw would a be a nice goodie to add to the list