The V-spec also has much stiffer rear springs, like over 300 in/lb. So posibly both might be needed. I think the axle is a nice and fairly cheap upgrade. Mike --- Jon Pennington <cowboydren@b15sentra.net> wrote: > So those B15 owners with easier access to credit > cards than Nissan North > America parts bins may achieve the same effect (or > at least similar) > with a $230 Progress ARB?