[larrys40]

You could try the heat and quench method.
If the perches aren’t bad and need minor fixes like shackle bushings they may be able to be fixed in place as long as they are tight within the axle and wishbone. I assume there’s no remnants of cotter key left even they I’ve sheared if many . Sometimes you have a stout one!

Heat or heat quench, penetrant. Impact , to remove .
Larry