Thanks for that info . Was hunting the web to find that out. Knew the gtir crank was different but wasn't sure if the pulley was any different.Part 21051-54C01 (Pulley - Fan and water pump) is listed as GTi-R specific; SR20DET only.
The alternative (21051-53J00 or ~01) is listed as being for just about everything else; 100NX, Almera, Primera, Sunny, and 200SX
It's probably like the flywheel; you could make it fit if you wanted to, but it's meant to go on a different crank so doesn't fit without some work.