Reduce the vibes from your transmission.
Mushy stock rubber transmission mounts can't take the torque and vibration of high-performance street and race use. Energy Suspension polyurethane transmission mounts can. Polyurethane lasts longer than rubber, can handle more horsepower, and is soft enough to absorb vibrations.
Bushing, Transmission Mount, Zinc Finish, Red, GM/Jeep, Each