74 Rust Problem

I'm old enough to have bought that car new, but I like to help people. So if you are serious, you might look through here:

http://autorust.com/store/index.php?main_page=index&cPath=2&zenid=vc09m8seev01oe9oflsrnhetm0

These guys make and sell rust repair pieces for our cars. Not generally something for show quality vehicles but if you just want to get this thing on the road, it's a start. Their frame repair parts are generally "caps" that fit over the existing metal and are welded in place.