I have for sale a used merged header and muffler. It is  1 5/8 diameter ceramic black, made by Dynomax, which I believe is owned by Scat enterprises. It is in good shape, was removed from an engine after only around six months of use.
Asking $100 obo.
Location is in Egg Harbor Twp. 
For pictures or more info text Sean at (808) 292-9952, or email cgflightmech@yahoo.com.
Thanks for looking! (o\ ! /o)