Korki Buchek

iTrader: (4)

Would a replica nismo kit be structurally sound if I cut off the center cross member?

MustGoFastR

iTrader: (13)

Probably, but what's the point of doing that? You can get that look much easier by just adding the USDM Nismo lip to your stock bumper; it'll be exactly the same.

SuperBlack350z

iTrader: (59)

+1

Korki Buchek

iTrader: (4)

Could have sworn the opening was a little bigger on the V1 versus the stock bumper + lip. More research is needed.

MustGoFastR

iTrader: (13)

Nope, V1 bumper is viryually identical in proportion to the stock bumper; just has that cross bar in the grill and integrated lip. That's why, for USDM, they don't offer the whole bumper, just the add-on lip. V2 bumper opening is larger (taller).