I would probably disagree that the RB bar isn't that stiff. I did the Tokico HP/RB springs conversion first, then added the RB rear bar over a month later. Before the RB rear bar swap, the car was very tolerable in terms of ride quality vs stock, and I was extremely happy with the trade-off. But when I added the rear RB bar the car instantly became very harsh in the rear, as if it makes the rear suspension a whole lot "less independent." It would hike up the inside rear going into driveways a good 6". Even small road imperfections felt much harsher, at least compared to the springs/struts only set-up. If the springs and struts made the car 15% firmer, the RB bar alone firmed it up at least by that amount again. I'm not saying I regretted the swap, it was truely sweet at the lower speeds for Solo II, and doing that front bar swap was out of the question for me, but a 75 MPH+ emergency lane change indeed is what sent the car to it's grave. Better tires may have helped too, as I was never happy with the Fuzion ZR1's since I had put them on. They weren't very sticky and seemed awfully narrow for a 205/45-16. I couldn't imagine road racing the car (like NASA et al) with that set-up. Perhaps a more skilled driver, with more high speed experience could have "caught" the extreme whip-sawing that occured, perhaps not. The second "wag" of the tail sent me spinning off into the median barrier dead-nuts sideways. My forte was autocross. Just be careful with the differences in car set-up at different car speeds.