Mazda RX8 Renesis Porting template:

Large Steet ported intake ports with street port exhaust port.  Half Bridge port on primary non actuated port. Great for use with OEM intake  - template works well as street port or half bridge intake with drivability and performance in mind.
For racing and high performance application.

Approximately 7 to 20hp gain depending on your car parts and tuneing.

Not for street use