Item #	Part #	Description
1	637-12	Riser Cyl #1
1	850-76	Riser Cyl #1
1	850-14	Riser Cyl #1
1	637-432	Riser Cyl #1
2	637-13	Riser Cyl #2
2	850-77	Riser Cyl #2
2	850-18	Riser Cyl #2
2	637-433	Riser Cyl #2
3	637-11	Riser Cyl #3
3	850-75	Riser Cyl #3
3	850-9	Riser Cyl #3
3	637-431	Riser Cyl #3
4	637-14	Riser Cyl #4
4	850-78	Riser Cyl #4
4	850-20	Riser Cyl #4
4	637-434	Riser Cyl #4
5	850-49	Muffler
6	637-35	Tailpipe
7*	637-139	Muffler Shroud
8*	2-Hole Lycoming 77611	Exhaust Gasket