? about after the trans is removed (weight of engine resting to rear)

Okay, today I finally dropped the ZF-6 in preparation to remove the engine next weekend. I could not find information anywhere, but I placed a short 2 X 4 flat across the oil pan on the floor jack to prevent all the weight and full tilt to the rear after the trans was removed. It would seem if only motor mount holding the motor it would be bad to leave it hanging.

Is it safe to also jack up the rear of the engine to level off for removing other items on the engine? Just wondering since the oil pan is aluminum and a lot of weight to support.

As mentioned in other posts, this trans one heavy sucker and although I managed by myself, it would have been better to have help. I know there is no way I would attempt this going back in by myself and will do the alignment trick with cut off heads on a set of bolts as suggested by Jerry.

Thanks,