Hey Scrod,
I'm building another Rush and I ordered the threadless fork because they don't make a threaded one in white that matches the frame.
I'm looking at two options:
Have the threadless fork threaded and buy one of those NJS Tange headsets and some sort of cool quill stem (3tt, Nitto, etc).
or
Put a threadless headset and stem on it.
I don't like the looks of threadless stems on traditional steel track frames but I do know that it's far more convenient for swapping bars.
Could you recommend a good quality 1" threadless headset and stem that would be comparable in price and quality to the threaded setup I'm looking at? There doesn't seem to be much selection for threadless 1" and I've never had to shop for it before.