rubber floor pan plugs

ok, just finished welding up some patch panels in my pass front floor (never doin that again), and was wondering where I could get a hold of some rubber push in plugs to replace the rusted out metal ones. I have been searching and found a few plugs online for classic mopars and such, but none of them give the hole size. I just want a rubber firewall plug basically. I need 6, 1" plugs and 2, 1 3/8" i think. I tried going to few body shops and they were all closed for the holiday or weekend. Anyone on here work at a body shop, and can tell me if they'll even have what I need? Any help would be great.

TIA
Adam