You need a steering stem either from an NSR bottom yoke or a nice alloy one from Matt @ tyga.

Calipers you can either use RVF400 ones or ones from a 929/954 etc fireblade.

You will also need the disk from the RVF.

I would show pictures of the HRC forks I've just got but its 4t related and I wouldnt want to be seen to be a 4t fan ::shudder::
_________________
If I have to take the carbs off once more...