My wife's old car

[I make oil]

A '66 Mustang is a Unibody car. This means it does not have a full frame under the car they actually use the body as a support structure only using frame rails as needed front and rear for attaching the suspension and mounting the engine. This saves money in building the car and makes them lighter requiring less power to move them. This is all well and good for a regular car but due to the power this car will be making and the additional stresses of the Air suspension we installed Sub Frame connectors. This in effect creates a full frame under the car by connecting the front and rear sub frames increasing the strength substantially.