My diff is from a 6MT, and there is the exterior flange that bolts up to the drive shaft that's different, but swappable.
Review 4.08 Ring & Pinion Swap, she's alive! - MyG37
Here's a compiled list for VLSD drop ins:
List of aftermarket LSD for VLSD cars - MY350Z.COM Forums
For the wavetrac, looks like you need an open stud and a different stud (which might work with one side of the vlsd stud)
nasaforums.com • View topic - Wazvetrac issues/discussion