Loren,
Thanks for coming back and confirming what bearing style your VK (4400) model truck uses.
I edited my last reply to correct my terminology on the bearing design. Should have said "barrel roller" instead of just plain "roller".
Sorry for any confusion. Below are screenshots of a pics of an NOS GM# 7450034 outer wheel bearing and cup set that display your described "barrel" design. If you zoom in you can see the Hyatt numbers on the pieces.
Looking forward to hearing more on your truck and maybe seeing some pictures too.

Dan