It appears to be a drain hole of some sort, under the carpet. The hole is missing like a rubber plug (about a 2" hole). Does anyone know where to get a replacement plug? I've checked Blackdragon and Motorsport with no luck.

Check Ebay, thats where I got mine. There are 2 sizes, small and large.

Checked the local wrecking yards??? They should be at the top of your list for this small stuff.

I'd bet plugs from any Datsun will work. That's the creativity in keeping these car going is to m devise things that'll work from other models. Five tens are notorious for this. Yeh that'll work...:stupid: