Ferah, you can buy the R34 GTR hinges and bonnet latch assembly from Nissan.
Slab33 is right - those guards in the photo you posted look different to my guards, the indicator holes look like they're for an R33?
Also, for general knowledge of the people reading the thread - there's a place in Queensland that sells fibreglass copies of the Z-tune R34 GTR front fenders if you can't get the original GTR aluminum ones.