I've watched a lot of this guy's videos. Particularly during his Q60 days. He's currently with Z1 Motor and has a ton of experience modifying the VR engine. He speaks truthfully about what he's found out about the Z's version, both good and bad. MOSTLY good though. He goes into some detail about...
Just thought I'd drop this to give those unfamiliar with this engine what at a likely MINIMUM the Z can achieve. Nissan keeps saying the Z is getting a modified version so who knows.
This is on 93 pump and stock turbos. He runs through his list of mods @ 11:30 (if you want to skip), such as...