Gmc and chevy front bumpers

[1971 cheburban]

Are the chevy and gmc bumpers the same, I'm talking about the 71-72 style with the lights in the bumper. My chevy has one and it is completely toast, so I'm looking for one if anyone has one, prefer one that needs painted or blasted and painted. I've got gmc 3/4 ton lower a arms and spindle/ hub assemblie for sale or trade for the bumper. But I just wanted to know if the gmc will use the same lights as the chevy and in turn use the same harness.