My old pal Jaxxon has a print of SPFX. Not sure what the condition of it is at the moment. Also one and a half prints of MOSW, but Poita probably has the better copy.
SPFX has a unique issue in that two Disney clips were cut after it was broadcast. (Oh the irony!) The uncut version was never released on home video, and even the print Jax has is missing them. It may be possible to restore those clips from Mary Poppins and The Black Hole using other sources, (Jax has a 16mm Black Hole print) and Mark Hamill’s missing narration from one of the off air recordings floating around.