[> Subject: Batteries have changed for the worse in recent years. Used to be the Optima red top was a good choice, but they are not nearly the quality they used to be. Interstate are crap too... they only have an 18 month warranty and die within 3 years. Not sure about Die Hard. If I were buying one, I would most likely go with one of the auto parts units in the biggest cranking amp that will fit your space... sorry to not be more help. No help on the big block.