9A=Same as 7spd but with 2 over drive gears (ive lost count on how many overdrive gears we have now )
4A=Heavy duty variant has a bigger T/C and powerful lockup clutch.
Dirty Radiator=Overheats quite easily
Normal Radiator=Realistic? Less overpowered than original
High Performance Radiator=For drag configs (has thermostat wide open).