I looked at the dampner and it has the rubber insulation in between in the back so it must be an original. I can send a close up of it if anyone can identify an original Hemi pulley. I hope so because an OEM repro replacement is over 300 bucks. I bought this engine as it is so it's past is unknown.
The pulleys are reproductions. Maybe the dampner needs another 1/4" pushed on? Or shave the bolt back area of the harmonic balance pulley on a big belt sander? Or washer in between as I mentioned?