I'm sure I have a head here somewhere, I'll dig it up and photograph, from what i have heard, the muffler is slightly different inside, basically it is tuned somewhat to the higher compression.
Cheers Ty
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![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2012/02/full-5013-5211-head.png)
