The tried and true 2-relay transbrake for the Ford 6R80 transmission is now available on Amazon! You can now launch your Mustang or F150 at the drag strip just like the pros without the need for an aftermarket valve body. Follow the enclosed installation instructions and you'll be popping wheelies in no time! Please note that you will need to provide a fused power source and a momentary button. I don't include this with the transbrake because everyone's tastes are different, however, I will be offering a momentary button on a spiral cord in my store soon! It is recommended that you have an aftermarket torque converter to maximize the benefit of this transbrake. Additionally, a 2-step is very useful to help set the perfect launch rpm while at the track. This particular transbrake model is specifically for the following models: 2011-2014 Ford Mustang GT with 6R80 2011-2014 Ford Mustang 3.7L with 6R80 2011-2014 Ford F150 5.0L with 6R80 Look for my other store items for other years and models that are available. These transbrakes are serviceable also so that if you're ever having an issue with it not functioning properly, you can simply swap out the relays to new ones and be back in business!