You have several options. I went with the worst one......most expensive. I didn't know what I was getting into when I started, and the cost ballooned to well over $800, which doesn't include the underseat carbon crankcase breather box.
My way entails getting a new subframe, new mono tail section, new mono wiring harness and new mono latch hardware.
If you're keeping your biposto subframe, you can probably get by with getting just the mono tail section and latch hardware. If you get a mono subframe, you may need a new rear wiring harness. There are some that made the old one work, but I didn't.
Easy way: new mono tail section and latch hardware.
I got mine from Section8superbike. I looked up the part numbers on the ducati.com online parts manual and sent them to Jason. I could have gotten them locally, but I was getting a lot of other stuff, and Jason's prices were much much better, even with shipping.
If you want to keep your biposto option, then you need to get some parts. If you are not planning on switching back and forth, you can probably steal most of the parts from your biposto tail and put them on the mono. I personally have both tails and can switch back and forth - though I never do. Here is a link to a step by step of the whole conversion process:
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