What about the 1:48 (1:96) chases? Are those in the same box of 12 as the 2:48 chases or a separate box or random?

There has never been a reliable, confirmed box of 12 that contained all of the chase figures. In every series of Star Wars Kubricks so far, it has worked out like this:

Each Master Case of 48 figures contains 4 boxes of 12:

- 1 box of 12 contains one of the "high-ratio" chase figures from that series (1:48 or 1:96)

- 1 box of 12 contains the "low-ratio" chase figure from that series (2:48, 3:48, or 4:48)

- 2 boxes of 12 contain no chase figures

Now, there is no guarantee the trend will continue, but basically, you have a 50/50 chance of your box containing any chase figures. And if it is a chase figure box, you have a 50/50 chance of it being the "rare" chase box or the "common" chase box.