1-1/8 - 1-1/4" rubber expansion plug for the exhaust
View attachment 33672
for the stock carb/intake .....
3/4 pvc to 3/4 fpt thread adapter for the intake
View attachment 33671
3/4 thread to 3/8" hose barb connector to attach the tubing (I get this in a 90 degree version at Ace Hardware)