I'm assuming you're talking about the Rizoma tailsection? If so, it's a moderately easy install - you have to rout some wiring and remove/reinstall the stock keylock for the seat. It's more involved than older bikes, but it's not too bad if you take your time and are can methodically analyze stuff. I think it was here or on Ducati MS forum where I looked at someone's post that did a pretty comprehensive install with good pics. I think you can download instructions from Rizoma or PJ's Parts, but they're typical Italian and not so great. Oh, it should work no trouble on your Evo.