Kierann25 wrote do you know what menus that do god mode classes that work?

I personally use Matrix which is a paid Mod that includes menus for all cods. The MatrixMods package is around $50 last time I checked.
If you're referring to free menu's then you should look around because I'm not 100% sure what to recommend.
Also check out ApparitionNET or chaotic360 tool as they both include Client God mod classes for MW3.

if u wanna pay me i can help you with this

in your Destructionv1.ini make sure these 2 things are set to true:
DisableAntiGodModeClassesMW3
DisableAutoRemoveGodModeClassesMW3
After that, try giving him the classes again, it should change the killstreaks in his first 5 classes to specialist and they will have godmode