The tail of the transmission and the differential can be off a few degrees left to right, what is more important is that they are in the same plane up and down.
Looking at the pictures you are going to need a remote
oil filter. It does not look like you will have enough clearance with the frame to be able to change that
oil filter without pulling the engine. Give it a try and see if you can remove the
oil filter and re-install it again.
Jim