Marc Marc Marc while your special will be a lovley bike when finished , that is a beautifull example of a true classic
Your dead right Bill, 370 is true classic, 300-350 I think is the optimum size for a 2 stroke. The RM370 ruled in NZ and if you wanted to win that was what you were on.
To answer the other question asked, B and A have different forks, tank and some detail stuff. with the 370 what Roger rode on Sunday you could buy on Monday.