[Ohio Enthusiast]

Originally Posted by Tatsu333

https://www.justengineering.ca/shop/subaru/frs-brz-gt86-gr86-adjustable-traction-arms/

With it using a similar configuration to the MCA's but with what looks to be MUCH more robust materials and finish

This looks like a combination of the MCA mod (attaching to the original mounting point on the subframe) and the GP Sport mod (attaching to the frame). I wonder what side-effects this will have - it seems to be tying the subframe very rigidly to the frame.

As the price also includes arms with spherical bearings it's actually quite good. Some folks reported that trailing arms with stiffer bushings make the pickup point relocation mods shine, so this should be a nice mod.