Assistance, please: Original HL2 Models as Gmod Playermodels

I know the normal model choices available in Gmod on the Options menu, but I want to use the files from HL2 that have different animations. Is there a way to set it to something like models/combine_soldier instead of models/player/combine_soldier? Also, any way to change the movement speed in SP?

Copy a .lua file from a playermodel from garrysmod.org or something

Change the main name(after list.Set)to whatever you want

Set the model path(also after list.set)to whatever model you want to use

It’s like making a .lua file for a playermodel.

I haven’t tried it so IDK if it works very well. If it doesn’t work just get this: