There is a lot of disinformation out there but in my opinion the Pfadt coil overs, while not being the lowest priced option, offer the biggest bang for the buck. For the money they are by far the best engineered and easiest to use coil over system available for these cars. Their coil overs are a big reason why we chose to carry the Pfadt product line over others. When GM built the Camaro SSx to demonstrate what the Camaro is truly capable of when it comes to handling performance they came to the same conclusion. The technical details have been laid out above but if I can be of assistance do not hesitate to hit me up.