Kinda forgot to update this when I got my car back from the body shop a couple weeks ago. Everything went well, lost my original panels that got hit, but they were replaced with OEM parts. Paint match & blend came out clean.
Now that that's out of the way, I got a new front lip! Yes it is a replica. I'm not baller enough to get a real fiberglass Mugen front lip and I didn't want to cry if I ever scraped it on a driveway. Mounting was pretty simple, some of the holes lined up perfectly, some were off a few cm and needed to be redrilled. I did end up having to drill 4 holes into the bottom of bumper (2 in the center, 2 on the edges). I used the supplied 13mm nuts, bolts & washers it came with and 2 random 10mm bolts I had for the rear mount points.

Overall, not bad for 1/10th the price of the real Mugen lip, not to mention 2 day shipping (purchased Monday morning, received Thursday afternoon). I highly doubt it provides the same "aero benefits" the authentic one does since mine is floppy and the authentic is rigid. I'm hoping that this is my first and final "cheap/replica" part that goes onto my S2000. I just see the front lip as something that'll get scraped up and broken over time from just driving the car everyday, so I can't justify putting a really expensive piece of fiberglass on the lowest point of my car...