Can't seem to find out any info on using an 8-volt battery in a '55.
Will it charge?
Will it burn anything out, switches, solenoids, motors (windows and seat) etc...
I converted my 55 to a 12 volt system with a 12V battery which is not difficult and pretty commom and used a 12V starter. I have a never used rebuilt12V starter if you or anyone else needs one