It wasn’t that hard of an impact to the tree I’m sure any aftermarket arm would of been fine. The back part of the arm wasn’t even bent. That much till the ride back to camp. Every bump made it bend more.
Similar thing happened to me only 4 hours on the machine, clipped a tree going about 5mph and my right lower a-arm bent just like yours. After reading countless posts by others with similar stories I installed CT Raceworx lower a-arms and their gusset kit. It isn’t a fun install, but may as well do both since you’ll have the car apart anyways.