The R32 GT-R V-Spec got:
The afore mentioned BBS 17x8JJ rims with 225/50 17 tires, the Brembo 324mm brake upgrade, quicker reaction ATTESA-ETS tuning, and metal compressor/exhaust wheels in the turbos. Colors: White, Dark Blue, Black, Silver, Gun-Grey Metallic, Red Pearl, Greyish-Blue Pearl.
The R32 GT-R, the V-Spec, and the V-Spec II were made alongside each other from Feb '94 through to Dec '94.
So, the R32 GT-R: released Aug '89, ended production in Dec '94
The R32 GT-R V-Spec: released Feb '93 through to Dec '94
And the R32 GT-R V-Spec II: released Feb '94 through to Dec '94
Other differences i believe were the computer, suspension upgrades including torsion bars, push pull type gearbox.
Difference between Vspec and Vspec II was that the supsenion was set for Le Mans on Vspec II