[Gearhead999]

The price is going to depend on where you live.

Also, how bad the rust is....can it be patched?? How big of a patch?? Where the patch is?? Does it go into the wheel house and inner panels??

Or does it need complete new quarters??

Best to get a fellow mustanger and ask him what shops work on older mustangs. Yes, there are many shops that won't work on older cars. ie mustangs.