My data is only as good as the FSM. It does seem pretty consistent... 5 pounds for a sedan over a coupe. 50 pounds for a 2.5L auto over the 5MT. 70 pounds for the 2.2L auto over the 5MT.
Now if we can get some confirmation on some other models via this method, we'd have a damn good list. As it stands now, there are some interesting variations between model years.