Apart from the carb mods a bit of work goes into making the bike breathe better. Dead easy to find out. Take off tank and get you mouth really close to the airbox, shout Ivan and listen for the echo. If you hear Ivan,Ivan. Ivan, Iva, Iv, I it it means the mods have been done and your bike is Ivanised.
Dont ask me how you find out if yours has had a full monty.
Otherwise you could just ask Mike.