Felix Pappalardi's Bass Rig

Lately I've been trying to figure out what Felix Pappalardi used for his bass rig.

Felix Pappalardi was the Bassist for the hard rock band Mountain from '69-'72 and again from '73-'74, he had to retire though due to partial deafness.

I know that he used Gibson EB-0 and EB-1 Basses but aside from that I know nothing.

I'd like to know anything like Amps, Basses, Settings, Strings, etc. (Specifically on the song "Nantucket Sleighride" from their live album "The Road Goes Ever On".

Also: I have a theory that he used some sort of Alternative Tuning and/or Strings on his Bass.

Thank you in advance.