You know what... I don't know.

Crap guys, I just realized this as I'm sitting here typing to you - I never got any paperwork or receipts when I picked the car back up. The towing company dealt with the body shop and I picked the car up toward the end of the day at the towing company's location. I was so preoccupied with watching the one guy who was there as he radioed his coworkers asking for the location of my keys that I forgot to grab any documentation from them.

I'll get on the phone and see if I can get in touch with the shop to get details.

To be completely honest I'm not going to pursue anything even if it turns out that it's a replica bumper, because it looks better and even has better fitment than the bumper it replaced. I'm gonna leave well enough alone. Just want the paperwork as a record of things done over the life of the car.