Should work- a couple of comments - may/may not be too relevant .
getting a good airflow around thru rear of fins next to the can really bugged me - that's why I did that tunnel which makes air path under the can then out thru that lipped thing at bottom edge of aft lip of cowl. In checking out burned up engines years back -the rear of the bore adjacent the muffler can is a "hot spot".
If my new eyes are right , your muffler can is smaller volume than the one I use - N/Y? again, just a comment -