...there are still relatively decent 1 inch Tange headsets available for purchase on the internet. Ben's sells them.
You can bang out the old head tube races with a drift, by catching the edges. But you need a press of some sort to install them.

And the crown race may or may not be easy to remove, and replace with the Tange one.

I think 1" threaded headsets might be becoming endangered, though. So I'm not sure what to tell you in terms of waiting. It's a quick and easy job with the proper tools, I do it every time I paint a frame. But it doesn't sound like you have the proper tools.