1951 3100
I was waiting on the 'Heat' recommendation. Some will agree and some will not agree with heat. I personally had the spindles off my axle, put them in my press, and heated them, and heated them, sprayed some penetrant, and heated them some more. Used a rosebud, and was not shy using it. And after a while, it will start to release. You can hear the press starting to relax. Once it does, it's on then. They will come right out. The key, which more than one person told me, it to let the spindle cool on it's own.
I tried spraying them, letting them sit, and then BFHing them, but I'm not a big fan of that much banging. Something else may give, and not what you want. Bores cleaned up very nice, measured out correct, new bushings went in snug, king pins went in snug, and so far, everything is straight and true.
Whole front end may collapse, but I don't think it will.
A press is the way to go.
Just my 2 cents worth.
Mike