This is the first time i see an announcement showing new valve rotators. If interested, go to to: http://www.ebay.com/itm/Sealed-Power-RC157S-Valve-Rotator-/170822533311?fits=Model:Corvair&hash=item27c5d100bf&item=170822533311&pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr Daniel Monasterio