I want tail lights with more brightness & contrast
These DOT-approved bulbs are interchangable. 1157 is the stock center light.
The 2397 has a dimmer running lamp and a brighter brake lamp than the 1157; good for a bright brake light in the pods, but with more contrast due to the dimmer running filament (which also uses less power and produces less heat).
Another good bulb for pod use is the 2057.
The 1157 bulb is not recommended for use in the pods as running lights. They tend to run hot. There's no point in taking a chance on melting your lenses when there are good alternatives.