Any Towbar attached to the ED30 will need the bottom part of the bumper cutting
Now if it was me i would buy a cheap bottom part from a basic Golf or GTI or similar and cut that , they do one with a piece cut out already too
The bottom part of the ED30 bumper is very expensive for what it is and very few people would want a tow bar on an ED30 , put it back on when you sell it
Just my thoughts