While I was there I replaced the silly flexible mounting bushes with solid ones. They never made any NVH difference, but they did make the steering rather vague.
My fear was that with no slop in the bushes, if there was any misalignment in the unibody or the subframe (e.g. from a crash at some point in its life, which I think it may have had) the solid ones would be unforgiving where the originals were forgiving and the subframe might no longer fit. It's fine!