Originally Posted by DazC
But the old RS500 touring cars did over 200mph down conrod straight in the 80's IIRC

No they didnt.
If i remember right the highest speed EVER recorded down the conrod straight was by a R32GTR and even that wasnt above 200mph.
IMO the only time a Cossie has EVER been proven above 200mph apart from in the dreams of old RS500 touring car fans (eh martin j

) is Rods car the other day.
Id be sure a few tuned cossies have hit 200 on M-Ways in the past, but not many, less than 5 i bet, and never proven.