Not sure if this was the issue, but I was looking for the R8 coils and plugs on ModdedEuros as well, but they only sell the BKR8EIX which is recommended for Stage 3+. Your sig says Uni Stage 1+ which would work best with the BKR7EIX spark plugs. Did some extensive reading through old posts and it sounds like most people run the BKR7EIX. Hope this helps.
You can pick the BKR7EIX, I just installed them this morning. I found some on Amazon for $30