The most literal meaning of restoring a car is to send the car back to the factory, but a better idea is to transform your car into your dream car when you send it for restoration. The aspect of restoration and painting of cars has seen a dramatic change during the last few years, as totally new measures are used. In most places, while restoring classic cars, companies tend to upgrade the brakes, suspension systems, and steering of the car as well.
This will help your classic car to operate smoothly and safely. In fact, if you upgrade to a factory crate engine it will surely give you a factory warranty and it will last longer.
The best part about classic car restoration is that even a 1960's model can transcend into a brand new car. In terms of classic car restoration, the internal parts and accessories get changed totally and you will have freshly replaced body work, paint work and even a new windshield if required.
Your most loved classic car will be totally refurbished after the car restoration process. While using auto body fillers on the car, primer should be used first and you should strictly avoid plastic fillers or paint. With a car that's in a better condition you will need to work less. Old cars fitted with mechanical brakes have a less chance of facing brake failure.
Regarding classic car restoration, giving a proper finishing is very important to make it look presentable. To smooth the rough body of the car, 40 grit sand paper is a great option to use. You should get an extended sanding board; probably 3-12 inches in length. Load it with 80 grit sand paper, and you will have to get the 40 grit sand paper scratches removed from it. As you sand the body of the car, you should mask the car and spray it with feather fill.
As you allow the feather fill to dry up, you can start sanding it, and on a long board, use the 80-grit paper. Lastly, you can sand the car using 180 grit sand paper, after which you can finally apply a primer.