Yours is a ‘normale’ so the battery box is bigger than the BL? but electrical requirements are the same……..
I have an Exide EA654 fitted – 65 AH capacity with 580 A cold cranking
The original was 45 AH but my thoughts on batteries is that bigger is better, if the charging circuit fails, the car will run a long time just providing a spark off the battery reserve to get you to a garage/home etc.
The 580 cold cranking does spin the engine nicely on the recently fitted 12v starter (but probably led to the demise of the 6 volt starter out in France) 😳