The repro ones I have seen (but I don't know which brand) have a very thin metal edge along the front that does not extend as far down as an OEM one. And the metal itself seemed very thin, and the hood was definetly lighter.
It's probably hard to tell if you haven't handled an OEM one quite a bit.
Also if it is incredibly clean on the underside and the top of the leading edge, it's probably a repop. Those are the areas that rust out first.
But just my 2 cents worth...
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold 1980 T/A SE Bandit - Sold