I was asked by one of our members in PM some questions about these rubber rocker drain flaps and the holes they go into... so I went down to my car and tried to make some photos. I had to hold a light under the car, and photograph these *blind*.. although I could feel them by reaching under the rocker, I'd never seen them (Not even when I was under the car for a week or so cleaning the bottom a few years ago - I guess I didn't do very good at that, but now that I know they are there, I'll do a better job cleaning next time..
Anyway, since I don't know if I can send photos in a PM, I thought I'd search for an appropriate thread and post the pix there, and that is this thread began by Danny in 2011. He some 'original' rubber plug/flaps he'd purchased in a swap meet (and I've no idea if he still has those or not).
Attached below are photos from blindly photographing under the drivers and passenger sides of my car (not on a lift, sitting on the tires). I found (from the photos) that on my drivers side, the 'flap portion' was missing, but on the passenger side it was intact. That's good for what I wanted to show, as one can see the square hole the flap covers, as well as the flap in place from the two photos. I didn't want to remove the plugs in fear of breaking off what was there...
PS. I can't quite make out the PN, but there appears there might be a date code as well? If these can be removed without damage (any ideas?), I could clean and make better photos? Hopefully this helps my questioner and perhaps some others as well.
PPS. I checked out the Rick's link posted in the 2011 thread, but the part seems to be no longer carried?