here ya go...
difference with Vspec models...
"To celebrate the success of the GT-R in both Group N and Group A racing, Nissan introduces the Skyline GT-R V-Spec ("Victory Specification") car on February 3, 1993. The V-Spec added Brembo brakes and a retuned ATTESA-ETS system to the Nismo and N1 packages, as well as 17" BBS wheels with 235/45/17 tires. The V-Spec has a list price of ¥ 5.260 million.
Finally on February 14, 1994 the Skyline GT-R V-Spec II is released, the only change to the V-Spec being wider 245/45/17 tires. Total production of the V-Spec I and II is 1,453 and 1,303 units respectively. The N1 GT-R is now based on the V-Spec II.
Total production of the R32 Skyline GT-R was 43,394 units, with production starting on May 22, 1989."
Source: http://en.wikipedia.org/wiki/Nissan_Skyline_GT-R