As an alternative to the MCA traction mod, which is months on backorder, I went with the GP Sports version, which has built in subframe reinforcements in the front section, and a set of aluminum subframe inserts for the rear. The rear inserts are a bit of a problem for my 2022 BRZ, due to the swaybar mount, but I think I can work around it with adjustable endlinks.
dunno why the forum is rotating the photos. Doesn't normally do that...
You can see the change in mounting location in the last pic. The rear suspension feels a bit more compliant. I like the mod a lot for my setup.