TeeRoy,
Welcome to stovebolt.com.
This topic is discussed quite regularly.
There are variety of ways to search for old posts on different topics. If you push the word Search that is just to the left of FAQ, above, you will see a lot of posts on this topic - type in: +water +pump +plate
The relocation plate, used with the older 216/235 water pump for your earlier year truck, is considered to be the best way to use a newer 235/261 in older trucks. This places the water pump in the correct orientation to the radiator, and at the correct distance from the radiator (and it allows you to use the correct width pulley on the water pump).
