Pm sent15151515
You may just have to make your own.
This is the expansion plug you need for the exhaust, the red plastic ones they have at Home Depot don't work. I sourced this one from O'Reilly auto parts and I verified it to work on a stock jug and one with an aggressive trail port.
![]()
Also I ended up needing a 1" x 1/2" threaded fitting (~1.3"o.d.) for the carb side with a 30mm OKO manifold instead of the 1.5" shown above.