Fitment and Product Information. Cylinder Head Porting Kit. Brandname: ALLSTAR PERFORMANCE Part Number: 11052 Description. Cylinder Head Porting Kit, Case/Mandrels/Rolls, Universal, Kit. Welcome To Allstar Performance! The key to success in a car building project is access to high quality, reasonably priced parts that get the job done right. Each Allstar part is the result of our dedication to research and development. Once a need is established, parts are designed and manufactured by talented craftsmen, many of whom are racers and hot rodders themselves. Many Allstar Performance parts are one-of-a-kind; you won’t find them anywhere else! WARNING : This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer.