The GenV is still a more effiecient blower anyway you slice it. Plus, there is no U-Bend in the '04+ cars. I'd take a newer motor over a old one anyway if I had the money. And the GenIII blowers on the '97-'03 take pulley swaps better...not the new ones...the new ones you can make as much power if not more with a bigger pulley. Plus in the newer ones you have to have way more supporting mods to drop a pulley size.

For the Nissan motors. No way.

Read here.

NISSAN Z FORUM > VQ35 vs VQ37