On to the repairs...
So I really lucked out with the condition of this cab. She has good bones. There was only one corner that had to be fixed and several small scratches on the sides. I prefer to use bondo instead of wood filler because it has a catalyst that chemically dries it. So regardless of temp outside it will still dry and I can sand in about a hour. However, I only like to use it sparingly as a filler for repairs I have made not as the repair itself. I.e. One corner was gone, so instead of useing bondo to fix it I cut out the damage at a 45 degree back to good wood, removed the piece, the cut a new piece of 3/4" mdf and glued it back into place. This way there is solid wood in the repair. Then I used bondo to fill the seem, and then floated the area with bondo to make sure it was all the same level.
I always go slightly heavier than I need to because it will shrink slightly when drying. The picture is of the second coat of bondo, sanded and shaped, third coat applied and sanded again. I just got my first 1/16" Freud slot cutting router bit and it cuts like butter. A little too good actually, so one swipe with that and it was on to paint...