What fits?
 

Hi I've just got a 1999 750ss (fuel injection) and would like to fit some different cans (perhaps carbon). Are the 900ss the same? What about Monster cans? Any reccomendations gratefully received.:)

750 / 800 / 900 / 1000 ssie cans will fit straight on.
Earlier carby ss cans and Monster ones will eventually fit but there wil be a fair bit of work involved.
I think you can still get the Viper ones quite cheaply on Ebay