looks like its a fiberglass hood....4x4parts sells these..... if i reacall correctly its non fuctional... though you could make it to be... i would buy it... but then i would have to repaint it LOL
thats the older model 2.5 turbo intercooled diesel (non-common rail) hood. (the 4x2 model is the same). the later common rail version of the D22 navara has a better looking hood. in UK its called NP300.