VP Autoparts own product.

Mustang 1964-73.
Upgrade the handling performance of your vehicle with High-Performance 5-Leaf Rear Springs.
This mid-eye springs lowers your car approximately 1" compared to our HD Standard Eye 5 Leaf Version.
Please note because most Leaf Springs being replaced are 40+ years old and already sagging the drop on you car will be less than 1" and in some case you will note no drop at all. Offers superior road handling over stock, 4-Leaf designs.
These springs also help prevent wheel hop and spring wrap up on hard acceleration.