MT125R's from the mid to late 70's ( 1977/78) ran water cooled barrels and heads, the kick starter shaft area was the water pump housing was located, CR125M bottom, road racing pre NSR125
Google it, saw a clutch cover with water pump on evil bay once upon a time.
centre code 325 i believe
link to a bike for sale, with spare parts
http://automotoclassicsale.com/node/31619try the NZ and UK historic road racing seen.
Regards Gibbsy