So, my teenage son wrecked my 2001 Jimmy today, not really that bad bumper, bumper cover, headlight assembly.
No damage to radiator, radiator support, fender or frame thankfully.

I do have a 96' blazer, I know the headlight assembly won't fit swap over, but what about the bumper and bumper cover?
The blazer has the turn signals in the bumper, but other than that it should swap over right?

 

Bumpers should, and all you need to do for the rest of the grill and headlights, are swap the rads support. Maybe the headlight wires, not sure on that part...