it is honestly not that hard. It takes about less than 10 mins to replace say a Pz I with the Luchs. Kinda wish there was a better way to format this.

First find cheat.mi in the cheat mod folder. Mine is
Steam\steamapps\common\Men of War Assault Squad 2\mods\cheatsmod\resource\map\cheatsmod
And then open it. I will be using Notepad++ in this informal guide.

The inside can seem overwhelming at first, but it is simply a matter of finding what you need.
Use CTRL+F and search for Pz1b and then replace the first result with Pz2L.
So it should look like this {Entity "pz2l" 0x9002 and then edit the TexMod part so it looks like this {"/entity/-vehicle/tank_light/pz2l/pz2l" "1"} and remember to keep the spacing the same otherwise errors occur!

Then CTRL+F 0x9002 and find this line {Inventory 0x9002 and you will see what the vehicles spawn with. Add {item "bullet20" "zenite" "ammo" 2000} underneath {item "mgun" "ammo" 8000 {cell 0 2}} so that your new Luchs will have additional rounds to fire.

Lastly CTRL+F {"cheat_ger_tank5" and replace {text "PzKpfw I"} with {text "PzKpfw II Luchs"} then replace {image pz1b} with {image pz2l}

Congratulations, if you somehow managed to understand this hastily and rather poorly written guide you will have successfully and magically changed the puny Panzer I into a stronk Panzer II Luchs.