Did you look in the parts books? That should convince you
Gm has made some rare mistakes in some parts books but they get corrected year to year
However it is general knowledge amongst the bumper enthusiasts that the panel rear bumpers are the same curvature and hole pattern as the front bumpers
Now what is the size of your panel? There are 4 options for the rear bumper of a panel
The half and 3/4 ton thickness in chrome or paint
And the 1 ton panel delivery in chrome or paint
-s
