Hi Scott,
Looks like a good find!
Have you checked that 20" wheel/tyres fit in that tyre carrier?
Seeing yours got me wondering whether mine (orig.) is big enough for 20" too. I will need to look tomorrow.
Your first pic of a tool box looks exactly same as mine, so I HOPE it is original
. It is even the same color. Mine has several rust holes though. Yours looks to be better than that.