As others have already advised, the Canton subwoofer is a smallish box that takes up some space behind the nearside wheel arch, and I think precludes the fitment of the variable height floor (although I believe this is no great loss as they are not that strong.) The full normal wheel well is available. Mine's a 2019 Vrs, so I purchased the appropriate black foam wheel well insert and jacking kit from a main dealer via their Ebay outlet (these vary according to original wheel fitment and ensure your boot floor/carpet is supported) and then a Golf Mk7.5 space saver spare from an online breakers, again via Ebay - this was in fact new and had never been fitted. All done for far less than the dealer complete option cost.