I am replacing a tar top battery with an AC/Delco group 24 battery in my 1963 convertible, 327 CI, 340 HP, no A/C. It is a Top Flight judged car. It appears the coolant overflow tank needs to be removed to replace the battery. I have received some good recommendations from a couple Corvette Web sites, but some of the advice conflicts. I thought it best to consult this technical discussion group. Any advice/recommendations/instructions, including pics or graphics will be most appreciated.