CO pages 211-212 covers unit Customization. Two questions:
1) Is "removing" a Cargo/Transport Bay (or portion of one) to install another a Class B refit? As written, it appears so.
2) Does the restriction on Large Craft Refits on page 221 ("DropShips, JumpShips, WarShips, and Space Stations can only be customized in repair bays (see p. 146, TO:AUE) of sufficient size to accommodate the vessel") apply to internal refits like the presumptive "Field Refit" above? Or only to Class C and above refits (that require repair bays or factories for all units)? It would seem simply landing a DropShip would be enough to accomplish Class A or B refits, at least purely internal ones.