Default [Q] Using 5120 modified kernel on i467M

Wondering if anyone has any experience using a modded kernel that works on the 5120 (LTE) on the Rogers/AT&T version, the i467M?

I would like to get control of CPU speed, slow it down slightly when I'm reading, maybe undervolt a bit to get better battery life, but don't want to install a modded kernel and have it brick the device.