My change was one that really did not remove any kit weight -- I opened the belly of the model - added a lite ply trough , which accepts the tuned can -- The ZDZ80 single mounts at 8:00 angle - this permits the header to make a single sweep --ABOVE the landing gear into the trough and the muffler can sits directly behind the gear plate and angles slightly downward -- the exaust outlet just clearing the aft end of the tray -- which ends at the second bulkhead.
I detest internal muffler setups on all but models with large amounts of room internally for a can and easy access to it.
This setup allows the can to stay cool -- the system is extremely easy to access and on the ground - you can't see it - in the air - you can only see it in a close up slow fly by.
If you want to see a identical setup - there is a pic of one on my web page -- in a H9 Cap-in the Workshop Hanger.
I do have pictures of the 202 setup - but they are not on my web page -yet.