ΔE 18.2, loose: different enough that you should pick on purpose. Gal Vorbak Red is noticeably darker, more saturated, warmer than Space Magenta.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Gal Vorbak Red is noticeably darker, more saturated, warmer than Space Magenta.
The same difference applies the other way round: Space Magenta is noticeably lighter, more muted, cooler.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Space Magenta on the colour wheel See Gal Vorbak Red on the colour wheel
All matches: Space Magenta equivalents · Gal Vorbak Red equivalents