Fishtail Extra Quiet Muffler for a 64. PN 65242-62A

[Skirted]

As shown in pic, Looking for 1.
According to parts book 65242-62A was used 62-66. Not sure if these were repopped but I need an original.
I've seen some that have the center hole plugged. Not sure on what those are?
Thanks

Extra quiets.jpg