Engine bracket question

Yes the brackets go on the backside of the lugs, with the majority of the bracket hanging down
If you install the biscuits upside down The little line-up nub won't fit in the second hole.
There is no room for a standard flat washer on the engine side of the bracket nor should one be used there; only the regular split spring loc-washer.

Notice again how the biscuit runs of the front edge of the bracket, and the frame-side stud is on the bottom-half of the biscuit.

Notice in post 29 the second pic, how the stud is angled wonky towards the front. Take a look at the metal behind it, and see the curvature. That bracket has been deformed from a [-channel into a (-channel. And because the mounting holes for the biscuit are so close to the front edge, it twists the biscuit.
I don't think that's a big deal......... until you tighten the nut and twist up the rubber. For sure I would straighten it out.