Follow Dave's advice and everything will turn out great.I used his adapter plate on my 1956 passenger 235 engine in my 51 suburban,works great.He won't steer you wrong !!

Buy a new water pump,a used one will just cause you problems later.

Good Luck,
Tim

1951 3100 Chevrolet
1951 Chevrolet Suburban Carryall
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"A house is built with boards and beams. A home is built with love and dreams."
"Look deep before you leap !!!" / "Everything is Everything"
"If I say a mouse can pull a house, hitch him up"