I just saw a set of Michelin Pilot Race II tires (S2 Rear) and Michelin Pilot Power Front for $205 shipped on Ebay. Has anybody used the Pilot Race II tires? I know the Pilot Powers are a newer tire (2004) and are excellent but the Pilot Race II tires appear to be similar. This is a tough deal to pass up, so I'm just wondering if they will be good for street/trackday tires. Also, I'm not sure about mixing two different tires (even though they are both Michelin and probably similar) Thanks.