After the first autocross post-boosting, the car was stupid pushy so the main goal was to fix that. I went up 50lbs on rear spring rate and reluctantly went to the mid setting on the 16mm Perrin rear bar, fearing the stock torsen diff wouldn't like that. As it turns out, the stock torsen diff definitely did not like that. The handling was not perfect but much much better than before. This at least lets me know what the next steps are. I have the Packwood Pro Solo this coming weekend so no plans to make bandaid changes for that. But I'm going to do a 3.73 final drive diff, OS Giken, then go up in rear spring rate more so I can go back down on rear bar.