The additional space increases the volume between your 1994-95 Mustang 5.0l throttle body and cylinder improving volumetric efficiency.
Air/fuel charge is thoroughly mixed for complete burn for increased horsepower, torque, and improve the throttle responce.
I purchased a set of your wheel spacers for my son for a Christmas gift...He has a 2003 Mustang V6, his first car. He loved them, and they have already been installed! Love Late Model Restoration...The place to go for ALL your Mustang parts! Thanks, guys.