Has anyone installed the model specific Givi top case (357) with a v46 or 52, and if so, does it provide enough room for the passenger. I have a v46 from my old V Strom that I will be using on the FJR with a Givi backrest, and I thought someone here mentioned that the 357 cheated the passenger out of some room. I was given the mount today for Christmas but would like any comments before I install it. I was actually looking at the other rack I saw on this forum, which uses the givi 250 mount as an alternative.