I no longer see the torsen dif as an option for the convertible, am I missing something?

 

My guess It's a slip in the listing. It's available in the coupe along with the Yamaha Damper for $460. In the Convertible the Yamaha Damper is listed at the same $460. So, the Convertible should include the LSD with the Damper.

 

New 24 window sticker lists the LSD and damper as $460 option.

lexus (northsidelexus.com)