That first pic ain't too bad really. A metal strip with 2 bends in it and 2 bolts with nuts/washers and you've got a 130 amp installed with no grinding of brackets. It doesn't have to be in the original orientation to work. it might require a slightly larger belt in that orientation but I doubt it.
I know you've got what you've got now and it works so if I were you I would stick with that aswell, should it go out on you however, it's something to consider.