I was looking at both selector/shift arms (from the forester and wrx transmission) and they seem to be relatively worn about the same. I called subaru - part is $76 for a replacement.
I've got everything back together with the exception of the rear diff. It's going in today. The shifter assembly won't move so I need to check tightness on the bolts and make sure nothing's backwards. I installed a clevis pin in lieu of the roll pins that were installed originally. I had a feeling I'd be removing this assembly, glad I made the switch. Will check back with updates.