It isn't clear what you are needing...
Water pump cover? Water pump impeller? New engine?
For engine bits - many parts are interchangeable with a suzuki drz400. They used this motor as "inspiration" when they designed the gasgas fse engine.
There is a 450 fse being parted out on e-bay (USA) right now. It looks like most of the "motor bits" are still available. I see water pump cover and the impeller appears to be on the end of the counterbalancer that is listed.
jeff
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