What battery is everyone using

so I need a new battery for the last project roller. I go to Auto Zone and find a few small things I could not find at O Reilly. GREAT! Livingston Tx. ya got love this part of SE Texas!??.... I get ready to get my new battery, looking for a group what was it? no one to be seen but this young Mexican girl, she asks in broken English what I want. battery for 71 Plymouth Duster, I reply.
she never could get the plymouth or duster part, finally another worker overhears our conversation and looks up the size! HA!