Fuel pump problems

I have cam driven fuel pump made by chandler-evans ce9141, that carson brummett told me was off of a wwii p51 mustang his guy in van nuys,ca doesn't repair them anymore.the pump works fine it leaks out the driveshaft any information or advice on the repair or were to get parts would be appreciated i know that they were usd on ski race boats

steve 909-240-2800
snydermotorsports@gmail.com

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Fuel pump problems