1952-59 Ford Radiator Insulator Block

Hello Guys,
I bought a 55 Ford 272 in a basket and finally finishing up, in one of the boxes I have what according p/n is a rubber insulator block for radiator or radiator u-shape apron, cannot at all see where it goes obviously under the radiator ***embly or radiator. Ford service manual isn't helping with this.
Can anyone explain its usage or location?
Thanks much,
Don

 

The Illustrations section in the 1949-59 Ford Parts Manual should show it.

 

Thanks,
looking at cheat marks on old insulator and using D.C. catalogue which provided a better description of insulator I was able to determine location.