http://www.roadracingworld.com/news/vintage-racing-european-endurance-legend-cup-announced/
I'm very excited about this.
Classic :
1968 to 1981, air cooled four-stroke, air or water cooled two-strokes, 4-valve engines to 1000cc, 2 valve engines to 1300cc - original or modified original frames. This class is expected to cater for machines from Laverda, Ducati, BMW, Moto Guzzi and earlier Kawasaki Z1000 and Suzuki GS1000s with tuned engines.
Legend :
1976 to 1984 air cooled four-stroke, air or water cooled two-strokes, 1300cc maximum displacement - original, modified original or aftermarket frames. This class is expected to feature big four cylinder motors from Honda, Suzuki and Kawasaki in frames from Harris, P&M, Moto Martin, Bakker, Bimota, etc.
SuperStock :
1973 to 1986 four cylinder 750cc or twin cylinder 1000cc machines with air or water cooling and original frames; no engine tuning is allowed. This class is aimed at early Suzuki GSX-R750s, early Honda VFR750s, Yamaha FZ750s and Kawasaki GPX750s
Superbike :
1976 to 1986, up to 1300cc displacement with air, water or oil cooling - original, modified original or aftermarket frames. This class is expected to feature full-on race bikes from the mid-eighties.