normanXS400

Hi everyone..this is my first time here. I have been reading you for a while, and I have recently purchased an XS400 from year 78. I want to make a cafe style bike out of it, and was wandering if these exhausts will fit. I'm planning to buy two conic air filters for the carbs as well, so I will have to rejet (do you call it rejet?...I'm spanish...) the carbs. I have also been looking for tires, and finally decided the Maxxis Cheng Shin C180...they are so cute... Any ideas are welcome!!