[Are all Benelli’s drilled and tapped the same?]

Are all Benelli’s drilled and tapped the same? I have a Supernova that I want to buy a weaver mount for and I found one that fits perfect on the SBEII. So is the SBEII and Supernova drilled the same? -Thanks

[Mounting FastFire III to Supernova]

Hello, I was just wondering what I will need to mount the Burris FastFire III to my Supernova. I have a weaver 423 mount on it so does this mean I can just mount the FastFire to this? Sorry, I'm not that educated on mounting optics to shotguns so I'm just looking for some advice. Thanks, Tom