I looked in the chasis catalog tonight but can not determine if I need a standard water pump or an Avanti water pump for my 63 R1 Wagonaire. I am putting this wagon back together from a box of parts. The prior owner took it apart with the idea of sealing the engine and never got it back together. The wagon is worthy of a restoration though. It is one of three known to survive of the 42 R1 Waginaires built in 1963 and the only one built with three on the tree.