Dip and strip is generally a better approach to starting a restoration project than going on the attack with a sandblaster and sandpaper.
Chemical stripping will remove everything except the metal. Then you can see what you have, and begin to make the needed repairs.
If you don't put a primer back on following a chemical strip, the exposed metal will begin to rust very quickly.
Realize that this process will only bring you to the starting point, and allow you to get a good looksee at what you have to work with. It is not a process that will allow you start sanding and filling and painting immediately.
It will remove paint, bondo, and virtually everything non-metal on the body, and depending upon the process, it can also remove heavy rust.
Good way to get started. Generally speaking, ametuer sand blasting and sanding an old body will do a lot more damage than good.
Professional strip facilities do this for a living so they tend to do it right.
