been using wilwoods front [vented rotors] street duty stuff on my 3910 lb car since 2003 with absolutely no problems what so ever !!! i've installed them on many cars also without a hitch in 2007 i installed the pro street w/ park brake on the rear with a wilwood master cylinder! we have a short shut down at our home track and i have no problems stopping at 154mph then drive it home stopping at stop signs and red lights, 2nd best investment on my car!!!! [1st was the hemi ]