Jeff, nobody makes rotor housings except mazda, ironclad patent issue im sure and Bill, why throw lead at a car already being considered for a weight/ performance adjustment. I could understand dropping the weight for cars with "stock" VS "turbo" housings by 75#. basically my season is will be half over IF im one of the lucky ones that get 2 of the first shipment, they didnt say how many would be here maybe in 8 weeks, just that SOME would be arriving maybe.