wanted: info 1965 rear step license plate mount

[Woogeroo]

Howdy folks.

I am looking for information and images, or scans of old chevy dealer catalogs, etc..

I am trying to find out what style of license plate bracket I need for my 1965 Chevrolet C10 lwb stepside.

The stepside and fleetside rear bumpers are shaped differently. I have been told there are different types of license plate brackets. I do not know if this is due to the type of the bumper or if it was a change during the model run.

Any information is welcome.

Thanks.

-W