BBK Power Plus 70 millimeter Throttle Body for Ford T-Bird 3.8L for all BBK 1989-1995 Thunderbird Super coupe throttle bodies are designed to increase airflow and improve horsepower from between 7-12 HP depending on the vehicle and application. All BBK performance power plus series throttle bodies are CNC machined from high quality 356 aluminum castings to ensure perfect OEM quality and fit every time. It has features like OEM die stamped throttle linkages, double sealed bearings and o ringed throttle shafts. They make BBK throttle bodies the number one in performance and quality.