Some advice please,

I am sure this will have been asked many times, but I need some advice on my engins selection for my WM GS Zero.
I have done a search in the forum's and got a little information but I have no experience of many of the engins makes that are mentioned, IE Moki and alike. So some help on a good combo would be great.

I would like to install a multi cyinder 4 stroke if possible, I would like scale performance with a good sound. Glow or Gas.

All Ideas welcome, Thank's.

Dave