Seeing how nobody is probably working on these old chassis sleds anymore I figured it out on my own. So the rear PTO side engine mount is very easy to unbold and bolt back in when the motor in place. Its behind the secondary and also hold the torque stop on . Just remove the 4 bolts (nuts are welded on to bracket and chassis so no need to hold them with a wrench which makes it super easy.) and take tha rear mount and torque stop right out. Install the engine and then once the 2 holes on the mag side motor strap are over the mounts , lift up on the PTO side and install the rear motor mount to the strap and drop the motor back into place. Once in place put the mounts bolts and torque stop back in . So much easier. Can't believe I struggled with this all these years.