BS34 Throttle Bodies

Are there any differences between BS34 throttle bodies? Specifically, how much interchanges between BS34's used on the KZ or GS or GPZ models. I have some carbs from a GS and will be getting some GPZ carbs and wondered what will cross over.

Thanks,
KC

First of all there are a couple of different BS34. Second of all GS bodies are different, because they are made for different spacing so the butterfly section is a different width. ON the KZ750/1000/1100, if they look the same they are. However the slide assemblies may be different. When we speak of bodies we are speaking of the empty casting only plus butterflys, since they are theoretically non removable.