For those of you that have the 416 kits may want to consider a 39mm FCR carb. I did not realize how much performance it added untill I put a stock carb on mine for a day. All I can say is the stock carb was a dog normally with the 39mm fcr I can be lugging up a hill in 3rd or 4th and mash the gas and I am gone no problem no down shifting. I tried that with the stock carb what a joke all it did was bog and I was forced to down shift.
Needless to say I have a lot more fun riding with the FCR.
I just though I would share my experience.