Mattax said

Here's some of the threads.
Maybe Turbostart? or Restoration Battery?

https://board.moparts.org/ubbthread...oup-27-red-cap-mopar-restoration-battery.html
https://board.moparts.org/ubbthread...04091/reproduction-antique-mopar-battery.html
https://board.moparts.org/ubbthread...resto-red-top-big-block-group-27-battery.html

Click to expand...