Originally Posted by Tony Ryan
Cosworth supplied a lot of Kit form engines to Rally or race companies , each different variant had a special code , YBS was one i remember seeing on a car once , its not unusual for engine blocks to have been stamped up for one purpose only to be bought by Joe public , dont panic !
That was on my "I hope it's something like that"-list
Just didn't like the idea of finding out I'm driving around with a stolen engine
