Well I have done it. And it wasn't really all that involved. I have adapted the AE RC10GT2 steering cranks and servo saver to my BJ4WE. I haven't run it yet so I'll hold off on posting pics until I get it sorted out.
I was amazed that the cranks matched so perfectly other than their length end to end where they mount into the bearings.
I had to move the crank that connects to the servo horn to the opposite side of the car and move the servo back by flipping the mounts to the front and drilling new holes. Then I'm going to have to mount the receiver in front of the motor (which concerns me, we'll see).
I was even able to use the stock bearing cerriers top and bottom. Although I did have to capture the bearings.
I'll update on how it works and post pics if it works well.