Z33/G35 radiators from China appear to be pretty close to ours. when i say pretty close, i mean nothing like ours
A Z33 unit needs PLENTY of modding, a G35/V35 doesnt need much at all. best bet is to get one with the transmission loop already in it.
That said, it will fit with some cutting of the radiator support. its soft as shit, using a hacksaw blade and my hand did all the hard work on mine.
also, my water pump/viscous fan is poo. temps hit 98 on the freeway, and slowly dropped to 82ish and back up and hung around 90. too weird for me. Im going new pump and trying another fan clutch i think!