Testing working using the deodexed stock rom.
Doesn't look like these work anymore. Follow the guide to enable init.d or use scriptmanager to load the modules. [Only follow step 2]
**UPDATE***
Added cm10.1 kexec modules. You can use the same Init.d install.
I also added a link to whirleyeyes Tweakerz.apk that acts as a front end GUI For overclocking. Changes will not persist on reboot but it can help when you are trying to dial in the best settings.
Example Script