hi there,
I still have some x1->x16 with a molex connector lying around in my basement, some of them in original packaging. However, I'm in the EU(Germany), so this probably only makes sense if you are within the EU as well, or if you are willing to pay horrendous amounts of money for express shipping(dunno how much it'd actually be, but germany->us and vice versa is usually not the cheapest if you want to receive stuff in a timely manner)