Removing my 727 TF - Quick question

Exhaust pipe can limit motor travel too. If/when exhaust is disconnected the motor might pivot far enough for dist' to hit firewall or fan to hit shroud. All varies with what engine, which style motor mounts, etc...
Do yourself a favor and replace the selector shaft seal also while the trans is out. My selector shaft seal was first to leak. A chore to replace under the car. I've put off that front seal renew for 3 years now ( it started leaking a few months later ). These seals usually are all the same age.