i didn't, as i wont with only having 1 lambda sensor.
pretty easy job so id try it yourself.
i believe its this part you need.
clicky.
if its the correct one which i'm 99% sure it is, id buy a 1.1 exhaust fitting kit as most will have seized on and probably be scrap when you take it off. id also buy a wire ring gasket as the one on might be corroded.