I investigated this via people that were selling random Merc armrests and non of them claimed that they would fit at all. I always remember the drop in one I had in my fin tail and how useful it was. I asked Kevin O'Keefe about making one for me but he seemed reluctant. I have looked at other custom ones but they just look home made. Looking at the photo in my earlier post it does show that it's possible. Any ideas anyone?