Wow, that bumper is longer than I anticipated ...
makes sense with the nose cone of course but somehow...
I'm sorry.. I have no idea *shrugs*
I think it'd be best to follow anderkarts advice and contact Rod van Deusen.
the chassis still looks dark star to me ... except for the body and bumper now;
but I can only compare your kart to other karts pictures really..
(most of which seem to originate from the website anderkart linked to anyways)
So yeah, ask the source
But first: Buy it..
'sid