Well...update.
Trying to wrap the baffle and then put it inside the muffler is IMPOSSIBLE!The diameter size of the baffle is enough to fit perfect inside the muffler until the "bell end".So there is no room for the fiberglass.Also tried to cut horizontally the baffle and then squeeze it to reduce the size with no success and stopped before make further damage.What i did was to put back the baffle on the muffler and then stuffed with fiberglass from the back with a help of a stick until the end of the baffle.Simple as that.
Not sure if it's the right way and i hope not to push the engine or so,but the job was done.
Put them on and tested.Absolutely awesome!
The sound level reduced almost to the half.Nice sound on idle,not annoying on cruising speed and whenever i want i can be loud enough.
