1. mk2 16v ignition control unit, aka ecu
2. think thats an 8v k-jet idle boost valve?
3. need part number from the actual fuel bit really, the bit there is just for the plastic airbox. most likely 8v one though, based on airbox and pipework. is it 1.6 or 1.8 though, as in the next pic looks like you have MK1 items there
4. 8v k-jet air pipe + boot, looks to be MK1
5. 239mm pads, need to check thickness but likely to be for vented since all the rest of the bits are GTI spec