Which tranny and what to do about it?

My understanding that they put NONE or "darn few" 727's in A bodies, so you undoubtedly have a 904. Get down on the pass. side and see if the side of the pan rail is straight, or has a bulge near the front Easy to see

The gasket at the top left with the bulge is the pass. side 727 pan. The 904 gasket, bottom left, you can see that the matching pan rail is mostly straight



Click the link below. 727 on left, 904 on right

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