HPS projects start with a computer designed model and a prototype is made
         and tested. It takes hours and hours of testing and refining.
Once the design is refined tooling is made and tested to eliminate core shift and
thin casting spots. Inferior  tooling can result in a poor fitting and performing
manifold. It can result in weak, leaky castings like seen in similar manifolds.
After the castings are made they are machined and checked for fit and finish.
The HPS is a true "bolt-on" manifold. All stock hardware bolts on in it's original
position. Typical install is 1 1/2 hours.
The end result is a manifold worthy of carrying the HPS "Hardball'r" name!
Design
Tooling
Machining