Wow, there's Funfinders in New Zealand? Never would have guessed that.
As for the framing I know for sure that in 2010 they had aluminum framing, but not sure when they made the switch from wooden frames. My trailer has a decal on the side that says AlumaX (or something like that) If the one you're looking has that decal then it would be aluminum frame.
2011 Chevy Silverado Crew Cab 4X4
2009 210 WBS