Ok guys, this is neither my project or a French car, but I stumbled across this chaps 59 Ford Thames Campervan restoration and it made me think twice about rusty French cars being beyond repair. Check out his metal fab work - it's pretty amazing.
http://retrorides.proboards.com/index.cgi?board=readersrides&action=display&thread=89224&page=15
http://retrorides.proboards.com/index.cgi?board=readersrides&action=display&thread=89224&page=15