I am replacing outer sheet metal along the left side of my 65 Econoline van (lower portion between fenders, rear fender, and rear corner with fuel filler).

I would like to know if anyone has any advice or warnings before I tear into this.

I have already removed the rear corner and repaired the floor and rear door jamb. Before going further, I would like to know if I'm going to run into any structural problems with too many pieces removed.

Thanks