Ash doesn't have the patent on using large bell cores. the unique thing about his IC's are the cast aluminum end tanks that he custom makes with 2.5in in/out. Coz uses sheet metal end tanks. Coz developed a product to compete with the massives, and to compliment his IC pipes. It is similar to ash's but the onlything unique about Ash's ICs is different on Coz's. That scenario is completely different to the AMS/MSP scenario.
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