What are the differences between a automatic tranny car and a manual tranny car?

For 1Gs, there are several differences between manual and auto cars of the same year, aside from (duh) the transmission.

Auto 1G cars have 
-  smaller turbochargers 
-  smaller injectors (390cc) 
-  a 'power/economy' switch located next to the shift lever 
-  ECUs designed for the smaller injectors 
-  cams designed to produce more low-end torque [1G only]

Manual 1G cars have: 
-  bigger turbochargers 
-  larger injectors (450cc) 
-  a nifty little coin holder next to the shift lever, a fave place to put electronic widgets of one sort or another. 
-  ECUs designed for the larger injectors 
-  ECUs designed to produce less low-end torque [1G only]

2G owners rejoice, as their auto and manual cars have identical engines - assuming, of course, you are comparing apples to apples. Aside from the presence/absence of the 'power/economy' switch, there are no other obvious differences. There still may be additional differences for both 1G and 2G cars.