727 46RH conversion coming

I did end up adjusting mine by loosening the trans mount bolts and the motor mounts. Used a short pry bar, and it was quite easy to move the back end of the trans towards the pass side a little and re tighten everything.
Now I have what looks like about the same clearance on the driver's side that you have. A good quarter inch between the side of the trans and my reinforcement hoop.