PERFORMANCE THROTTLE BODYImproves airflow for instant horsepower increasesUp to 15 horsepower gains are possible!Easy to install in 30 minutes-you can do it!Bolt on power and improved throttle response in minutes! No modifications! Direct-replacement bodies for EFI equipped vehicles are made of new 356-T6 aluminum alloy, computer machined to exact tolerances and assembled with factory quality components to ensure the ultimate in fit, finish and performance. Complete with new gaskets, necessary hardware and full instructions. Legal in all 50 states. NOTE: SKU numbers ending in F are factory shipped and may take a little longer to reach you.