Most older cars are going to need some sort of auto body rust repair when you undertake a proper restoration project. Whether it’s rust removal from small patches or repair of panels that have completely rusted through, you will need some help with this to keep the underlying metal panel in good enough condition to acceptable take primer and paint. Many smaller body shops across the country perform auto body rust repair. Maaco is one of the most well known national auto body and paint repair chains in the country. One of their main specialties is auto body rust repair.
For more info, see Five Things to Know About Car Bodywork Repair