Firefly artful dodger starting drive core
The latter.


  To use the Artful Dodger, during set-up pull a "Modified Radion Accelerator Mark II" drive core from the Osiris Supply Deck to serve as the Artful Dodger's starting drive core. With its faster core and higher crew capacity, captaining the Dodger means working fewer delivery jobs and focusing on riskier, more profitable crime jobs.


That's from the product's BGG page. It looks like a quote from an official source.