Take the converter out anyway. You want to make sure it is seated correctly or you will kill the pump as soon as you fire the thing up. You might want to replace seal too. When you stick the converter in rotate it and push in, it will drop in once. Keep rotating and pushing and it will drop in again. Then put the trans up. I like to have a stud hold located around where the starter is so I can easily see and line up the studs. Also, don't use the bellbolts to pull the trans on. If something binds you will crack the bell.
Matt