Exhaust size

Moin! Yes, already again exhaust, I hear them moaning…. Nevertheless the following question: I still have the slightly modified original pots on my 09er Rocker, the heat signs of crackers and pots are black coated. Since I actually like the optics, but would like to have some more open pots (mainly because of power yield in connection with new mapping) the question arises, whether there are retrofit pots (for example the Screaming Eagle), the exact same size as have the original ones and so I could keep my heat signs…??? Thank you for your answers! Norago