That's a Challenger ring, and a Challenger hood, i can't see the posts too well, but if they are threaded rod cast into the ring, it's a repro ring, the threaded studs on some of the repro rings leave a lot to be desired, an original ring will have posts cast WITH the ring, meaning a 1 pc construction, not embedded, an original "stud" will be somewhat tapered in construction, and cut with a speed nut type fastner, not a machine thread nut