Originally Posted by Geo Jeff
Any idea how much those boxes cost
No idea, other than what I can google. Looks like he may have used an "underbody truck tool box". You can find a bunch on google. I would imagine he made or re-purposed some sliders to make it slide out like that.
I think it's a slick use of space, and clever way to do the sink without making the plumbing move (other than whatever he did for the drain side).
(The bus is named "Big Woodie". Maybe it hasn't been posted here? It was on Craigslist a while back. Some more info.