Let's face it. The automatic transmission ford put in your Mustang from the factory was a literal slushbox. Adding even the slightest amount of power to your Mustang can cause the stock AOD to lose its guts. Luckily Performance Automatic, B&M, TCI, & others figured out how to make Ford automatic transmissions handle some horsepower! Take a look at our full line of high-performance C4, AOD, AOD-E, 4R70W, 5R55S, 6R80, and 10R80 Mustang automatic transmission assemblies & get your Mustang shifting as it should!