[Msquared]

Hard to say without knowing where you're starting from. I doubt anyone here has really tried a V6 with that GMPP package, and I'm not even sure how big the FE2 bars are. How's the handling balance at the limit right now? IOW, compared to what you have right now, do you want to reduce understeer, increase understeer, or keep it the same?

Generally, the BMR bar has thinner walls so that it is on 6% stiffer than the stock FE4 (SS 1LE) bar in its softest setting. The next two settings are 34% and 69% stiffer. That seems like a better starting point than the Hotchkis, which is 40/65/90% for the front. The problem with the BMR front bar is that is tends to crush the center "D" bushings in anything but the softest setting. So far, I've found that using the Hotchkis center bushings and brackets on the BMR bar works fine, but I don't know if you can get the Hotchkis bushings/brackets separately from their bar.

Conversely, the Hotchkis rear bar is softer than the BMR rear bar. I don't know why BMR made their rear bar such big jump in stiffness over the stock FE4 rear bar when their front is not as big a jump. I would not pair the BMR front bar with the BMR rear bar. I'd either pair it with the Hotchkis rear bar or just the FE4 bar. Or you could pair the Hotchkis front bar with the BMR rear bar, but that's a huge jump in bar rates and could potentially overwhelm your damping.