Get it right from Wolfe himself.. you can drive the single adjustable bar on the street.. yes... they are awesome.. we run one on our Mustang.. cut 1.25 60's all day on it.... here is the site.
I have several of H&R's bars on cars. I am truly impressed! I have that anti-roll set up on another car and to be honest I like the H&R setup better, espically if any street driving, just IMO