That one looks like it is an odd position and too small
Ford ones have the P/N on the stands C9 for 69 - 70
D1 for 71-3
Spoiler widths and overall length was different
Have had mopar spoilers on Mustangs over the years [ 2 ]
Mopar ones were wider, taller and had numbers on there stands 910#### if I remember right
Mopar ones also bring in 3 times the money
They look the same constuction wise, might have been the same manufacturer, just made to Ford / Mopars specifications.