Yeah that looks right, my one is labeled 64900108 but that's probably because the two mufflers are slightly different inside due to the different requirements of the back and front cylinder. The pair I bought had different sized holes where the exhaust exits. I went for the one with the larger hole.
They are also meant to be used with an emission control system.
PS, the muffler shop who installed it and made the joining piece had the clamp initially over the heatshield and it leaked a bit so they had to refit it under. What do they say, 'never enough time to do it right but always enough time to do it over.'