...I've seen that one before -looks lovely but I personally would leave off the Ferrari Badges.Huge improvement on the look of the roadster!
http://www.dnaautomotive.com/home.html
click on gallery
Mustang one -good greif! Diablo kit looks OK.
Thing is, I think you'd need a seriously loud exhaust note to pull off these. Every now and again you see N/A versions -or stock tubby's underneath. I don't think they'd convince anyone unless they made a convincing noise.