Not an H20, Not a T, and not a 6.0. I think it's special built.
I think you are correct here.
Exactly.
The hulls were built at the Federal University of Rio with 6.0 m length and 2.4 m total beam, specifically for a solar rally that will finish october 31, 2009.
It's possible that they used tooling from a custom F18 built there a couple of years ago.