I'm going backwards on my dart!

I know these set backs always surprise and hurt us, but you have to look at the bright side. We have cars, and so many people out there would love to have one of our cars but either can't find one in good enough condition to rebuild or can't afford one,etc. We are very fortunate to have these old cars and we will do ok. Do you have or know someone with a mig welder. It shouldn't be too hard to set a piece in to repair these spots.