Thanks, Kirk -
I can see this will likely turn into an interesting thread.
To answer your question on the source of my bumper... the real answer is "I don't know".
I purchased it as an unfinished (white) fiberglass from a Pantera Owner. I didn't get the history. He said he bought it, and then decided not to install it. So I'm not sure if it was a one-off, or someone's production run.
Follow-Up Question: So are you saying if the bumper fits (generally, but is too short), it's easier to build up the outside edges with material, than it is to split the bumper and fiberglass it up? Thanks.
Chuck / Rocky