Check this out guys, from the people who made GTR:
www.gtlegends.com
Will be a sim of modern FIA Historic Racing so will have in car telemetry and modern tracks. Unfortunately the Nordschliefe looks unlikely due to licensing costs.
Check out these screens:
Looks to be '73 RSR:
http://www.gtlegends.com/img/screens/GTLegends_TC76_1.jpg
906:
http://www.gtlegends.com/img/screens/GTLegends_TC76_4.jpg
CSL sharknose:
http://www.gtlegends.com/img/screens/GTLegends_TC76_3.jpg
This looks like it could be my idea of racing nirvana