Need a new box, what are my options?

I got input shaft play...almost an 1/8th turn before it wiggles the pitman arm. I've adjusted the box, but that only applies to the pitman arm shaft, and while it helped the wandering, it didn't help the constant correction from input oversteer.

I found a remanufactured on RockAuto for $132, but I have serious doubts in reman'd units.

What are my options? AGR? PSC? Others?? Which is preferred?