about the unsprung wieght issue... I have the V5 suspension and it was much heavier than the stock struts, and it was still balance biased towards the bottom(if I remember right, ti's been a year and a half since I did the swap), so I don't think it really makes much difference in unsprung weight. Of course, it could be that the V5 is just a heavier design regardless of the inversion, so making it inverted did help unsprung weight, but only in comparison with itself were it not inverted.
Damn, I think I just confused myself with that sentence...