Fitting Comfort Air Bags at rear instead of Sport?

[omodos]

K everyone probably fed up of me now, air springs sorry i said aibags before they are deflated gone in X5, it is the sports package and sports suspension, coil springs up front, air bags at rear and is self levelling.

bmw confirmed the correct part numbers (but they are asking exhorbitant prices) , BUT what if I opt for the comfort line alternatives at rear by Arnott? will they fit? i pressed the aftermarket sales guy and he said this is what we have listed for your car when i gave him my chassis.....but if they don't fit I will be stuffed. I have even emailed arnott, despite seeing in an old post from 2010 a note about the comfort and sport line of bags on X5 being interchangeable....

I checked the specs but only found package size, seems the comfort are 1cm longer than the sport and width 0.5cm wider that maybe an issue, but that is going by dimensions of packaging....