Mancini racing used to sell them.
I have a pair stashed somewhere. …(Not for sale) I will try to take a look tomorrow and post some pics. I can’t find them on their site right now. Maybe give them a call.
'duster, thanks for the response. No, I'm not looking to buy yours, but yes please, pics and measurements would be awesome when you get the chance. Others elsewhere have suggested the shorter of the earlier Max Wedge bells may be the ones used for the Hemi cars but I don't have any confirmation on that. In re: Mancini, A&A Trans also used to sell them many years ago but I don't see them in their catalog currently either. I'll try Mancini on Monday.