thanks for the warm welcome Dale!
i have made a project thread so hope to continue the discussion there mr.gormsby
the throttle body i have looked at is the same as you posted, i was thinking those 45mm bores were too much, i will look at some 600cc or smaller sportbike ITBs, i think i have in my bike parts pile a set of inline carbys from an gsx750ef with 34mm bores but i dont know if it is even possible to fit bike carbs on ej-de engines