I have 3 but you can use about 4 to 5. You need one for the rear diff, one for the front diff, there are 2 for the carb, and you can also vent the crank case breather which is located at the bottom left (in normal riding position) of the air box.
I didn't extend my crank case line because I used rubber sealent around the airbox lid and I never got a drop of water in it. The sealent forms into a gasket so it is easily removable and leaves no mess when it dries.
I didn't extend my crank case line because I used rubber sealent around the airbox lid and I never got a drop of water in it. The sealent forms into a gasket so it is easily removable and leaves no mess when it dries.