SpartansR3VENGE

Hello thank you for taking your time to read & help me. I 'm a newbie when it comes to this level of modding games So i found this mod for Halo 3 but have no clue how to install it. Could someone please give me a step by step guide on how to install this mod. I have Halo 3 mod tools installed correctly i have all the tag extracted ect but i have no clue how to use sapien or guerilla (i'm guessing these are used to install such mods) The mod in question is this Halo4 chief ported to Halo 3 https://www.nexusmods.com/halothemasterchiefcollection/mods/1702