Dear Matt K
Glad to help you.
I have posted once.
I thought you know it. (
http://www.gravesrc.com/HATORI_MUFFL..._p/hat2300.htm)
Here is one in Florida in USA:
http://www.gravesrc.com/HATORI_HEADE..._p/hat2301.htm
The header for DLE 30 is same one for OS GT33 (HAT 2300 and 2301).
Seached in Google as 'Muffler GSA30 26~30CC / HEADER ZENOAH 26 DLE30'.
Good Luck