Q-list, Just posted some pics of the vented rotor conversion I did on my Ur-q. http://www.geocities.com/MotorCity/5939/Urquattro.html#pictures Enjoy -- Martin Pajak http://www.geocities.com/MotorCity/5939 1983 Audi Ur-quattro (224,000 km) 1986 Audi 4000 S Quattro (407,000 km) with 5 bolt pattern