I went the route of solid mounting the nose combined with poly diff bushings. I don't know how common it is on your side of the pond, but state side its pretty common to either switch to poly bushings or go with a solid aluminum bushings for the diff carrier, with the only negative side effect being increase vibrations and noise. Also doing either of these is effectively solid mounting your diff. Prior to fabricating the nose bracket I had just the poly bushings installed and was only able to move the diff nose 1mm. So solid mounting the nose would have very little effect on things.
