This is probably a long shot in your case, but I recently had a steering problem on my stock suspension 85 CJ7. After turning a corner the jeep would keep pulling in the direction of the turn and as I applied opposite pressure on the steering wheel it would suddenly dart the other direction. It turned out to be a frozen (as is rusted) u-joint on the left front axle.
As I said it is probably not this in your case but it won't hurt to check it out.
Good luck
As I said it is probably not this in your case but it won't hurt to check it out.
Good luck