Rusty floor pan!

Hey guys,

Well I peeled back the carpet to clean up and see whats under. There was a riveted patch panel that had a bunch of bad rivets. I drilled them out and this is what I have. I need options. I dont have a welder. If I use the correct sealer, would a new piece of sheet metal and some fresh rivets be ok. I am open to suggestions based on experience. Thanks so much guys.



Sorry guys having trouble with picture size.....the area cut out is about 12inches x 12 inches