My frame must have been a mouse house.

That looks like it might have been underwater...muddy water...my dart was the same way, I know it was in a flood or two. I reached into every opening I could find with a wire to scrape it out, then rigged a long 3/8 copper tube onto my shop vac and just kept working at it. I too am hesitant to go after it with water.


Good luck.....it is a good looking car though...

Dave