Looking at a TRD Strut brace next since that's also super easy. Just need to buy a torque wrench for that. According to Monkeywrenchracing.com the TRD sway bar and lowering springs also fit the XRS, though Toyota's official site says it doesn't. Though, I've cross referenced parts between both the Corolla, Matrix Base, Matrix S/XR, and pretty much everything I would be replacing should fit, because they all use the exact same parts. Unfortunately, the second gen matrix XRS is a little bit of a unicorn, and not too many people mod them, let alone own one.