I bought this 78 300D last year, I knew it was going to be a hell of a project.

There was water on the floor and knew it was coming from the roof corners. I stripped the interior to get the mouse piss smell out, and bam, found this killer rust. Its on both sides.

For Photos, head right to the bottom. 78 300D Full Photos - Imgur

I'm not sure the best way to go about mending these drains. Honestly, not sure where to start. I was thinking a Dremel, JB Weld and some new pipe and tubing.

Does anyone know a right way to go about this?