727 transmission

Careful ordering the pan in the original post. Don't quote me, but I don't believe that one has a drain plug. The Dorman one does for sure. $40 on Rock Auto.

http://www.rockauto.com/catalog/moreinfo.php?pk=3583113&jnid=2&jpid=1

Filter extension is P4510054- $22 at my local dealer.