Respectfully, all things considered for what you're doing there isn't going to be any appreciable bag-for-the-buck in a fancy battery. There is plenty of low-hanging fruit in many other areas for relative respectable car performance. If it were me, being I aim to support the financial gains of their family, I'd buy that warrantied walmar...battery and exchange it every 3 years until you bleed them dry.
Can't do that 1 exchange is all you can get not that you'll need it because their batteries last over 10 years.
