For quite a while IntersectRaven's kernels have been properly zipped for easy installation via TWRP or CWM. Just copy the .zip to your Kindle,and install via your recovery. His zip will automatically update the wifi driver, as well.
However, as a word of warning... PLEASE do a recovery-based backup of your system prior to installing any new kernel. If you don't like the new kernel's performance, you can reinstall the original kernel by restoring the /boot partition from the backup you made before installing the new kernel. Also since IntersectRaven's .zip will replace your original wifi driver, make a BACKUP of your original wifi driver in case you ever want to go back to your original kernel. To do this, use something like root explorer to copy /etc/wifi/tiwlan_drv.ko to /etc/wifi/tiwlan_drv.ko.orig. Then you can copy it back if you reinstall the original kernel.
By the way, IntersectRaven's kernel will only overclock newer CPUs that are internallly flagged as factory authorized to run at 1.2 Ghz. You will still see a performance improvement with his kernel compared to stock even at 1 Ghz. Neall