I'm not any help here, but good luck. I found mine on Ebay after looking there for what seemed to be an eternity. I got the top side setup ie,top rod, throttle bracket, bellcrank and intermediate rod.
You may be able to adapt a 2 bbl. rod. Won't look correct, but should work
I'm helping Mr. Bubbles, aka Steve, with his project and we did the bending thing successfully but the problem is that the rod is too short even with the adjustments on the rod going from the bellcrank down to the trans. We can make some mods to the 2-bbl rod to get the length close but we're trying to get an original look to the Formula S clone and not have it look hacked up.
I used a barrel nut to extend the rod so I could use the 2 bbl rod. If you are looking to keep the stock look try checking with some of the transmission shops in your area. They often get parts like that and may be able to help out. The guys around here save a lot of that sort of thing.