That was the conclusion I came to with my Duster. My car sits in a heated garage so no need for a dump truck battery. I don't use the car as a snow plow or a tow truck, it only gets fired up on nice days so no need for a bunch of cold cranking amps. I measured how long the battery took to recharge after starting and it was typically less than 3 minutes.
Andy, my friend in southern Arizona uses $25 lawn tractor batteries in all his old cars. Even his 430 Lincoln. They all start because it is never winter there.
