Based on a 544, two 220's, and two 1800 restorations:

Follow the advice of the others with labeling and organizing things, don't forget a good marker and place the label inside the bag. (sharpie can get smudged off plastic when car chemicals are involved - ask me how I know).

Be very careful with all of your trim, especially around the windows - i have found a few cars that have been "repaired" in the past 40 years with nuts and bolts that don't take well to prying off.

While you are taking it apart, look close at all of the nuts and bolts - I drove a car home several hundred miles with home depot house bolts holding the front suspension together.

Before you purchase anything else, make sure your body is in solid enough shape and no other surprises - it is hard to resell parts and make your money back if you discover your body is too far gone.

From the photos, if you go forward, you should probably look at a solid donor car body, it will be cheaper than custom metal work unless you or a friend are handy with a torch and hammer.

Make a time and budget for the project, then double it twice more.

I raise my glass and toast you for taking on this project and keeping one more ol swede on the road. Keep the board informed on your progress, this is a great place of experts.

Keep 'em rolling
-Erik

-Erik