Hmm, I don't know about that. There are race GT-Rs(not JGTC) that used the same type of fender in the past. Check out the Falken R34 GT-R that they used for the Nurburgring 24hr race.You know, inspiration for the Z tune's fenders came from the 350z fenders believe it or not. Try to notice the similarity. I bet you they took the 350z fender and just fitted it onto the R34 by reshaping.
[attachmentid=16038] [attachmentid=16039]What pinched vent thing?
I don't know. The 'pinch' in the GT-R fender does look like the 350Z's fender, but the GT-R's 'pinch' actually sticks out from the original body lines and has a small outlet for hot air in the back. I'm not sure that the Z's fender really serves any purpose like that.I noticed it and asked a few ppl on IM, and they agreed. There's nowhere online that says it, but there is a striking similarity. Since the Falken GT-R has been running with it since 2001, there must be some reasons to it. Can it be then that the aerodynamic design went on the 350z and then back to the GT-R?