USA s-500 nut replacement. Help.

Hello everyone. I hope you're all well.
I'm planning to replace the nut on my 2016 USA S-500.
I want to replace it with Tusq XL.
Which one should I buy?

Hello everyone. I hope you're all well.
I'm planning to replace the nut on my 2016 USA S-500.
I want to replace it with Tusq XL.
Which one should I buy?

Here are some posts which might help:

Are G&L nuts curved or flat on the bottom?
Want easy replacement nut for Legacy Tribute

Hope this helps.