It's a butterfly type that slides over the top of the carb. It is not an inside the carb type. Yes we have a bunch of pictures much earlier in the thread

Guys look...I didn't want to make this thing a big deal but I see how it does get to be one. As I stated earlier, the engine should meet the sound requirement. It did meet it at Todd's shop when we were only bench running pattern props. The only prop that failed was the 18x6 Vass that the sport guys would typically run...then again that prop turned 9500 on the pipe which is of little use to the pattern competitor.

I am looking for a certain quality to the sound is all. I don't want to get too bogged down on this issue because it's not really that big a deal. The setup works great as we've discussed