4. Here's the torque converter's drive cover, which features an anti-balloon plate, a billet pilot, and a CNC flame cut ring. Even components such as this are custom-matched to the vehicle in which the converter can be used. As we inspected this part, we realized that taking apart and rebuilding a torque converter is something we'd never want to do on our own. Unless you really know what you're doing, torque converter building is best left to the pros.