Bought a C3 XP-E but hate the driver... What can I do?

Sorry, may be an old post but I have been searching for some time and
have not found out the diameter of the driver in this SS C3

Warhawk stated that the driver in this light is very similar to the SK68 driver.
And the OP in this thread said that the diameter of the SK68 driver is 15mm.

Reason I’m trying to figure this out is that I plan to replace the driver as soon as it arrives with a 17mm driver.
If the pill does not accept a 17mm driver does anyone think that the pill could be turned down to accept one?

Cheers.