I'm lucky enough to spend the Mustang birthday here in Dearborn at Ford's HQ, the bad news is that I have to work on the holidays, but the good news... Is a colleague lent me his Mustang 5.0! LOVE IT!
That yellow version with those plates has spent some time at my work place, I work at Dunton technical centre in the UK, I've seen it do a few hard rounds on our track. It's a lovely car in the flesh. Good luck on your build!