Just because there is no notch doesn't mean they still aren't on backwards, having a notch only makes it easier to tell. Also, if your bolts are in backwards that could cause a problem as well. Not sure if they can go in backwards but if they could that would be a problem.OK well i looked at my shackles and like i thought there are no notches. I'm thinking i can machine a notch in them like some of the other brands have.
The angle they are installed isnt the conern, its the clearance on one side vs the other. It obviously isn't hitting by much so if you were to take the picture you have above, take out both bolts, and turn it 180*, keeping it at the same angle but putting that red bushing I can see on the right side of the pic on the left side instead may solve this problem. Either that or a BFHthey look the same just the angel this is a picture that slammed 1 posted