These are profiled for easy fitting. Print using TPU (shore hardness ~90) with 80% in-fill to get a reasonable approximation of the required shore 60 hardness. Fit the side with the cone to the top of the shock absorber, which assists in location in the upper mounting. The upper part of the bush is profiled to create a tight fit when the mounting nut is tightened to the end of the thread so there's no lateral or vertical free play.