I can think of very few situations where there could be "too much battery" for a situation- - - -maybe an 8-D 12 volt that weighs 120 lbs. for my Honda Gold Wing? That would require a trailer! If a higher amp rated battery can be adapted to a vehicle without going to ridiculous lengths, by all means, do it.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!