Not sure they will do this for you, but I bought two 2.5s (hybrid red and mini dragon) and begged for the P3 connector to be put on. The CS rep said it was normally only offered for the satin and stainless 2.5s, but she made an exception in my case. Not sure why, maybe because I was buying two, or that I had spent lots with them or what, but it's worth a try, all they can do is tell you no.
Don't THINK I didn't notice that earlier.