I feel like we can address some of the gripes with minors mods. Meaning ITS module maybe Spoon springs which also appearing help with ride quality. It'll likely still be stiff compared to luxury car though. And theres a 300 dollar mod to add rear A/C that I plan to do this summer also as a dad...
Meh, I wouldn't feel confident saying either way. I bought it for sound and look anyways. Any power is a bonus and likely marginal at best. But between HKS exhaust and adding PRL intake, it sounds how it should IMO. noticeable without being obnoxious.
I have the HKS Hi-Power exhaust and can confirm the little area of diameter reduction that meets up to front pipe. And I can also assume it was engineered with the intent that remainder of exhaust would stay stock as the overall majority won't change more than that. Which is true in my case...