Here ya go...
Kindle Basic 2 aka KT3 G000K9
Firmware: 5.8.2.1 (304566001)
There is one post of nasser i found, saying that his KT3 as well runs calc Kindlet.
https://www.mobileread.com/forums/sho...d.php?t=277220
So it looks like it's not just the factory image that is Kindlet enabled.
He might chime in here.
wodan