Just spent the entire day in akihabara Tokyo. I checked three different huge hobby shops and none of them had any sort of skyline model. Wtf? They had all sorts of obscure diecast and plastic models but no G. Chevy astrovan, volvo V60, lincoln towncar but no 2007 skyline! If I would have found something worthwhile I could have bought a few and sold them to some driver members stateside. The one and only one I found was a stupid police car and it was hideous. Very angry....sushi-go-round cheered me up some.

 

I've seen them on Ebay

 

Here's a hint Infinit G35 die cast models. The one in my office is made in China (of course) by a company called eper or DubCity.
Gary