If you are a fan of the Mustang, you probably already know that the right place to update your muscle car is RTR (Ready To Rock) Vehicles. The company is owned by championship drifter Vaughn Gittin Jr. and has offered upgrades for the Mustang for more than a decade. Now, RTR has unveiled the RTR Series 1 pack for the 2021 Ford Mustang GT Premium and EcoBoost muscles cars. Only 500 units will be built, and before you get too excited, most of them are already sold out.

There are no changes made under the hood, so you will have to deal with the stock power horsepower and torque figures. But the car does get a new exterior look, improved handling, and a few touches on the interior.

In order to make the Mustang look a lot better, RTR installed a new upper grille with LED lights and a new lower grille. The updates continue with a new rear spoiler type "Gurney Flap", front, side, and rear quarter splitters, a new rear diffuser, and side mirror puddle lamps.

Updates for the interior are very limited, and they only include new RTR floor mats, a new RTR Shift Knob for cars with a manual transmission, and the RTR serialized dash plaque designating the build number in the line of 500 units.

The car rides on a new set of Performance RTR 19-inch staggered wheels, which were combined with a series of new handling upgrades.

The price for the two packages is $6,295 plus $1,200 for the 10 hours required for the installation job. So, the total cost is $7,495.