Originally Posted by synolimit

Stiffer is supposedly better for these cars in the front, more bar the better. Based off of just a straight bar (doesn't include the 6 bends or mounting hole locations) the hotchkins is the strongest at 35x10mm while that progress is only 35x6mm. In terms of twist or motion of inertia the hotchkins is 140% stiffer (I believe. MoI is 5.45 vs 3.89). Now if the progress bar has a mounting hole closer to flat part of the original straight piece before it was bent then the progress could be stiffer. Only way to tell is measure each hole to find out which ones closer.

Now since the progress is sold individually I'd say that's a pretty good bar to buy! The hotchkins rear is useless! Since most keep OEM or hell, they remove it all together! I yelled at hotchkins last night and asked why the hell are you not splitting them? You're losing customers because no one wants the rear.