[Rovernet] P6 2000TC Battery Size?

[Tom Rymes]

All,

Do any of you have a recommendation for a battery size to fit in my ’66 Rover TC? The 19 (!) year-old Ever Start it came with has finally given up the ghost, and I am not finding a group code to correspond to the part number on it, namely DT-3N. Before I just measure something up and slap it in there, has anyone got a reference for what has worked well for you in the past?

Thank you,

Tom