This is the alignment nub I was referring to. Left side mount faces one way. Right side mount faces the opposite way. The mounts themselves are identical so you need to orientate them the correct way. There are also nubs on the top of the mounts. This is the lower threaded section that goes through the subframe. It's length is the reason the subframe needs to be out of the way. Also there are not any gaps in the cars engine area to remove the left mount .