Well, I finally installed them yesterday, turned on computer function, etc, WHY DID I WAIT SO LONG!!!!!!! Absolutely needed for the the Z. So now, after installing noise/heat sheild a few months ago and now this, I have the perfect car. I highly recommend to all Z owners. Cost about $350. Not bad considering the valve stems and washer/nuts are about $55 each. I'm in heaven. My longtime friend Roger at HP Sales in Pompano did the deed. Great work as usual. Thanks Roger. :dancer01: