No, no umm, I think there would be some 34 headlight housings which only came with halogen globes, but if your headlight has the 'xenon' printed, it had HID's installed back in Japan, but the compliance people took them out because they're illegal on Australian roads.
If you've got the 'xenon' printed and you plan on putting HID's back in, you can, you just have to make sure you get the genuine HID system that came with the 34's. You can't throw those cheap HID kits in for example.
Headlight housings which came with HID's will have a different reflector design to those without HID. The two globes produce light in a different position. If 34's ever came with halogens from factory, there will be two different types of housings on the market.