Should have clarified my response. With my Fugi I've got two holes, one for the carb and one for the plug. You really don't see much of the engine, but, the 43cc is under powered at my altitude. Everyone tells me to put the DA50 in it, more power than the Zenoah and fits in the cowl with no holes except the exhaust. I have not seen this setup personally but I'm told several folks in our area are running this combination. Good luck, Jerry