Octavia 1U RS 1.8t suspension dilema

To start with Apexi RDX kit, all sellers discarded Octavia 1U RS from the list, but I see people fitted them with no problem.

Second, H&R Cup kit same thing, no Octi RS.

Again Eibach & Bilstein B12 kit same thing...and so on...

In the fit finder section of Bilsten for example, I saw that the product code of shox for Octi is the same as A3 and TT, can anybody confirm that Octi RS can use Apexi and H&R kits and what would be the exact code or link.