I traded my 2004 RX8 after 115k miles before installing new PosiQuiet ceramic pads, front and rear, no.s 105.10090 and 105.10080. Website says they fit all RXs. Paid something like $85 for them and will let them go for any reasonable offer (or possibly an unreasonable one) plus shipping from Arizona. They weigh about 6lbs. Email me if interested: don_weinberger@hotmail.com