The 2021 Shelby Mustang GT350R is an instant classic. Its 526 horsepower Voodoo a 5.2-liter flat-plane crank V8 engine, track-focused suspension, and sticky Michelin Pilot Sport Cup 2 tires make the Shelby GT350R a force to be reckoned with on the track and street. However, before this GT350R could hit either one, it needed to be protected with XPEL PPF and window tint.