I have been pleasantly surprised by them, I was expecting a bone jarringly stiff ride but that is not the case. They do ride stiffer, but not harsh by any means, they are progressive rate, so they start out a bit on the comfort side until you really start cycling the suspension. I have noticed the truck feels slightly wallowy, hard to describe, but I attribute that to the added height not the stiffness. Cornering is much improved. Last Runner I had was an 00 and I just added the Billsteins, doing the springs and shocks feels better as they seem to complement each other, if you want a little height, no CV angle issues, decent off road performance and good on road I recomend this set up. Install was pretty easy as well, just took a little muscle to get the rear springs into place.
Bravo1, I recomend at the very least doing the Billsteins at all 4 corners, same for the springs really, my truck rides pretty much flat with a slight rake, where as it was saggy before, so doing all 4 should solve you issue, the rake may be too extreme if you just do the rear.