How to repair rusted out floor in a 1979 buick regal?

The floor panel/ board in my two door 1979 buick regal is rusted and rooted out, How do I repair it, or where do I go to replace it. Making Repairs?|||First fix the source of the water intrusion. After cleaning off all loose rust, use a couple layers of fiberglass cloth together with liberally applied resin.|||Call or logon to Year One, you have a GM G-body RWD platform that was shared with the Olds Cutlass from the same production run. They should have replacement floor pan kits for this application or they'll be able to tell you where you can find them.



First you need the tools, a wire welder for openers. If you don't know how to use one have this done for you by a competent body tech. Definitely not a task for the novice.



EDIT: When it's in place have both sides undercoated with that roll-on bedliner material so you won't have to do this again. Add that foil-scrim insulating blanket on the inside before you install the carpet and the seats, you'll be glad you did.|||Honestly its probaly not worth fixing,but if you did fix it you would need to cut out all of the rust by replacement pans and cut them down to fit and weld them in. I would guess 300 dollars to do it yourself ,around 1000-1200 to have someone do it.|||Best thing is to find an oem patch panel from a reputable company that specializes in buick restoration and have it fitted and welded in place. Any good body shop can do it.