Auto body questions

I bought a 68 notchback nearly 13 years ago. Drove it home and parked it below and paralell a 2 story house wall facing south. I purchased 4 scaffold stands about 24 inches tall and welded 5 inch sqaure channel iron on their tops. The car sat there for 12 years and is no more rusted today than it was then. I did spray a little rustoleum on the roof after the vynil top left in hundreds of little pieces. Sprayed a little on the hood too where paint washed away and surface rust appeared. An automobile is designed with rain gutters and such to prevent standing water on the outside. Standing water on the inside and underneath are the enemies.
You'll need to remove all the soft absorbent stuff like seats, carpet, and insulation.Crawl under and knock out every body plug you see.
"High and dry" so they say. High is dry or atleast dryer. Leave it lay in the yard on 4 flat tires and it will rot away. Hope this helps.