I recently had my battery tested and determined that is getting pretty weak. The car starts fine, but the cold crank number was 400-something while the spec was 600-something. That, and my shark injector install failed because the battery failed to maintain proper voltage. It's time to change.
What is the ideal battery to use? I'm seeing people using the Autozone 49DL. Has anyone here replaced their factory original and with what? Experiences?