Not sure what your setup is, but TT/LCR front end set up is different.
If you have the non R setup you'll need the following to make the change:
-Cupra R coilovers - for the droplink mount
-TT/LCR droplinks
-Measure your new ARB diamater against your old one, and get the matching ARB bushes
The job requires dropping the subframe
The job can apparently be done using the original droplinks mounted from the wishbones, albeit the drop links will sit at an angle and won't improve the suspension ride but also won't make it any worse. Spoke to a guy last night who had this setup on his golf with some pictures to prove it could be done so I'm just going off of that. Just gotta give it a shot and suck it and see really, it either works or it doesn't but from what I've read it should be possible