Welcome - sounds like you have a fun project planned.
I'm new to Z's - but have lots of experience with Vortech blowers.
Have any of you looking for BIG power tried stepping up to bigger headunits? I used to run a YSI trim
V-7 YSi Supercharger | Vortech Superchargers
The YSI is 1,600 CFM and capable of 30 lbs of boost at 65,000 impeller speed.
I was pushing 21 lbs of boost at only 6,500 rpm with big cams, LTs and ported heads in my Mustang 4.6L race engine ...
Not sure where the boost limit is on the 370Z motors though.
There are other big Vortechs out there - any try one of them on a 370Z?