I am interested in possibly putting a set of "correct" tires on my 1970 911S. I see they are available, but certainly not cheaply, through Coker and made by Michelin in France. Does anyone have any experience with these new (old) tires perfornance wise? My car had the orginal XWXs on it when I bought it, but they were very hard, and handled poorly, plus I didn't trust running such old tires at high speeds. I put 205/60s on it and they work well, but I miss the vintage look. However, I would not want to go back if they didn't perform pretty well.