This used shop service manual covers:

WA20X / WA20 X / WA 20 X water pump

WA30X / WA30 X / WA 30 X water pump

This is a great manual for the casual home mechanic or professional technician

Please see photos for a sample of what you'll find in this informative publication 

If you rebuild or restore any type of vehicle you know how important it is to use genuine / original factory / or high quality aftermarket parts. A repair or restoration project is intended to return that water pump to as close to original as possible, all the way down to last nut, bolt, cotter pin, cable or shop service manual.

If there's even a chance you'll need this/these replacement part(s) in the future you'd better get them NOW!. Keep this in mind,  replacement parts are always good to have. When you decide to sell your pump, including a few extra replacement parts always sweetens the deal for both buyer and seller.