Is a GMC truck just a dressed up Chevy truck?

When I was in the Navy, and had the 440-6 tore down, some clown told me "I should just go to the Dodge dealer and order a new short block."

"Why Dodge?"

"Because they are better"

"Better?"

"Yeah, the Dodge engines are built better than the Plymouth ones."


I tried to explain to him that the short block will have a CHRYSLER corp part number but he was adamant that Dodge engines are better quality than Plymouth