How to upgrade Android kernel version
I totally doubt if the kernel is for MTK devices because as per my knowledge goes (I too own a MT6582 device) MTK is a partially closed-source SoC manufacturer who gives out the source code by purchasing.
MTK makes a standard ROM based on AOSP and gives it out to companies but no companies are allowed to edit the ROM unless they buy the license for it.
This means that non-MTK associates can not make any part of the ROM as they don't have  the source-code

My Suggestion: Don't try this stunt because you may end up with a kernel with miss matching drivers and also a boot-looped device as a bonus :)