I have never owned a wing car -came across a wing that was in the trunk of a 70 road runner. How do you tell if the wing is mopar or aftermarket? were B and E trunk wings the same? This may be aftermarket as it says something TIRE inside the wing post - any info a help.

rear spoilers are the same on A, B & E-bodies (FoMoCo spoilers were made by the same manufacturer)
different design 1970 VS. 1971
the feet are somewhat hollow at the base and will have a Pentastar or Ford "oval" & part numbers on them if original

original Mopar spoilers (& some Ford) are 36" between the feet