Trans. Identification (727 or 904)?

Get down on your knees or whatever on the passenger side and look at the side of the trans. A 904 has a STRAIGHT sided pan, the 727 has a big bulge towards the front of the side of the pan.

727 on the left, 904 on the right. Clicky the linky

http://img707.imageshack.us/img707/8361/dart727904034.jpg