That's a patch done by previous owner, didn't know there was supposed to be a hole there. Is it actually functional as a drain? This isn't a concourse build, but it's going to be a nice car when finished. Are they supposed to have some sort of grommet in them?
I had every other floorpan panel replaced, but I've been moving house whilst this has been going on so it was inevitable something would get missed, it is what it ism and i'll never see it.
Yes there are rubber plugs for those large holes. There are six in the cab and some in the spare wheel well if I remember correctly. Classic Alfa has them or find them used.
I would have that hole cut in. Get locating dimensions to give to you body man. There likely should be a recess around the hole as you will see in the other locations but that is hard to repro by hand.
Functions as a drain if you remove the rubber plug.
Ken Geiger, Toronto
1965 GTA, RHD, Stradale
ex- 1965 GTA, RHD, Corsa, Trans/Am 66-72
1964 Sprint GT, B-Sedan in 70's
1970 Giulia Super (CDN Spec)
1976 1600 GTj (Italian Spec)
1966 Harley Sprint (Aermacchi) 250
2000 Catalina 320, Hull #765 Northern Dream
2001 BMW Z3 3.0i