You are after these mate (or similar)
http://www.ebay.com.au/itm/2x-White-LED-SMD-Parker-Globes-bulbs-T10-Nissan-Skyline-Silvia-R32-R33-180sx-R34-/270838999328?pt=AU_Car_Parts_Accessories&hash=item3f0f432920
Just take your front wheels off, undo the plastic inner arch skirts and bend back to get your hand in near the parker/rear corner of the headlight. Take out the old ones, whack in the new. Is a bit of a pita job, but doesn't take long.