Technically, yes.
Practically, the modding community has only now started to crack how to mod in new models, and it's so far proven impossible to modify or mess with sounds in any way, as far as I know.

And just as a heads up, even if it was possible, both of these mods would most likely never be sanctioned, so you'd only be able to play with them in the Modded Realm, which has no progression.