I personally could only understand using these if you were building an NA 2 rotor P-Port setup. The only huge advantage I see is weight. I promise you something else will fail in your engine before the irons cause you any grief
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David Jerome
Broker for Speed For Sale LLC (
David@SpeedForSale.com)
(Pre-owned RX7/sports car sales & new parts sales/installs/tuning)
PM me about low priced, high quality port work