You cannot! They're a different torpedo casing that are incompatible with current launchers. Same size, different internals that need charging/fuelling/etc. Price you pay for better photons/quantums/higher variable yields.
Maybe it's a blister on leading edge of the saucer or its a pop out?I'm interested to see how this new launcher is going to fit on the ventral side of the Saber's saucer, 'cause the best I can think of is it sitting at an angle so it's not getting in the way of the deflector.