[F Kruger]

Sorry if I was a bit confusing.

The models and sounds will be the same as the current zombie, so will not have to be remade.

In a nut shell what we require is a change to the zombie game play.

The only sound changes are additions, the additional sounds are for some events that do not currently exist, for an example: when a zombie becomes uninfected. Instead of bugging the modder in future with sound changes, we would like the additional event sounds in a cfg so we can change them as we please.

I will supply the extra sounds and a list of the events that we require first off, so making sounds and models is no concern to the modder.

The game play that we require is so different that I'm not entirely sure how much of the Original plugin the modder would want to use, I suspect that they would want to use the sounds, models, and some very key parts.
Sorry I am no coder myself so I don't want to tell anyone the best way to go about making the changes to the game play. If it has to be rebuilt we accept this is a possibility.

Note: Thanks Zephyrus. I have edited the OP to make this clear