If you want to go the permanent fix route then ya need the Motad Stainless Steel Headers.
http://motad.co.uk/product.php?prod=GTR1000%2C+ZG1000+A1-A14+Downpipes+%26+Collector+Unit.There is a US importer but I can't remember who it is.
They will cost approx $340 + shipping.
You will struggle to repair your headers.
You might manage it but it will hole through elsewhere quite quickly.
If you manage to get a half decent used set of headers, make sure that you brush all the loose rust off and then paint all the rusted sections with Rust Remedy or similar. When you first fire the bike up it will smell bad but that soon burns off.
This won't protect them forever but will double the life of the headers.