So I wanted to be able to confirm that the XCV-100 is the same model as the XCV-300 series, and it seems like they aren't the same at all. It seems like the XCV-100 "Scavenger" was actually about 2-3x the size of the concept XCV-330 Enterprise series. So basically what I'm seeing is that the XCV is the series of class of models, and that the number designations at the time determine whether its the older larger classes, or the smaller newer classes, if UESPA was a thing prior to Cochrane's Starfleet. One way to determine is with the front of the hull we saw: The XCV-100 had what looked like rows of decks with TINY windows, like windows you'd see on a Starbase small. This XCV-100 albeit similar, is NOT the same ship: XCV-100
XCV-330: