Taiwanese parts are generally pretty good for guards and front bars and stuff but I wouldn't use them for a bonet, in Sydney you can get pretty high quality aftermarket don't know what they are like in VIC though but with the bonet the metal is thinner if you come to sell your car and they press down to close the bonet you can tell the difference...

You can even get aftermarket radiator supports which are pretty good.. but genuine will always be better over the last few years the fitting has improved greatly aswell so should all line up nicely.