I was wondering if the Nismo parts for the Skyline V35 will work on the G35 sedan. I'm just wondering how big of a difference there is between JDM and USDM for this car.

Depends on what parts. If you were looking for interior parts, you might have trouble due to the JDM car's RHD layout.

As far as drivetrain goes, the V35 uses two other sizes of VQ(2.5L and 3L). Just do some checking before you order anything.

Thanks, I haven't actually got the G35 yet. Just doing some research first.

Good idea.