Optima Part Number for P5?

[Str8Dwn]

Need to replace the stock batt for a bit better one. I searched and could not find the model num for the Optima that fits the P5. Do I need to have a custom bracket made to use an Optima in the P5? I see Interstate makes a Megatron that fits. Any experience? Interstate is half the price of course.

I am hoping this will slightly reduce (not eliminate) light dim assoc with a/c and of course my sound system. While also providing the starting power needed.

 

[toucci]

an optima will not eliminate the dimming when the engine is running. it could have a million amps of power but there will still be a difference between the 14.4v alternator and 12v battery that will be shown whenever the alternator output drops or is overcome by demand.