Here's a stock '22 BRZ on Primacys soundly beating a GT86 on Direzzas. The '22 is E36 M3 quick vs Integra Type R quick for the Gen 1. There's more to the '22 than just .4 liters. The body structure is much stiffer and that's going to make suspension mods work even better. With your mods, maybe you couldnt feel it but its much stiffer. I own both. '13 FRS with a catback exhaust/Tein Flex Z/RPF1 245/17 with spc rlcas. The steering is still full of feel but it is lighter. After Bilstein B8s/Swift Spec Rs and Raceseng camber plates, I'll see if that makes a difference. My '13 was stock for about 5 minutes can't compare stock to stock. I find there to be a big gain in power not only through the mid range but the top end as well. I also owned 2 RX8s and that stiffness in the '22 is what reminds of my RX8s. Those have phenomenal torsional rigidity.