I saw a 250 GTO kit/plug here in Calgary in Trader.ca pages.  I also saw it advertised locally in the Buy and Sell but I did not see it when I just went in on a search of both.  I'll see if I have it book marked somewhere.

The guy had streched the Datsun, Stable kit I think, to make it oem and I think changed up the front end to make it oem as well.  He said it was used as a buck to pull molds from and now that he had those, he no longer needed that body.  It also came with a 240z chassis, if I remember correctly, with a V8 stuffed into it.

I'll keep an eye out.
Cheers
Don