I am way down south, log in to MoparMarket, it is an Aussie board and there are quite a few members up that way who are just as helpful as the guys on this board, nqkjw on this board is also on MoparMarket under the same name and he is in Townsville.
I don't think the mounts are the same and my Challenger is in storage with the spare mounts I bought in America so cannot confirm. Will post a help for you.