Not sure if MCA are making kits for the R32 GT-Rs, but there might be an option (a mate put a set on his Evo, great buy).
But hard to beat SydneyKid's Bilstein package.
That's because they're almost same rolling diameter.
Still, I'd want fat tyre all round (can also rotate them).
If you can fit them, 305/30/19 Hankook RS-3 would be my pick.
Only reason I didn't get it (Logitech G35) is because of USB (back when I had a laptop, wanted 3.5mm plugs). Otherwise, I would have got it.
Great headset.