I bought hard to find (read impossible) for Qjets here:
http://www.quadrajetparts.com/
You may have some luck or point you in the right direction.
I was at a wrecker today and even in this area found 5 - 10 Qjets of all kinds of configurations.
I had the same intake configuration on one of my old trucks and it was a pita to get working correctly - even worse when you convert to an aluminum intake without the recess.
My current carb has that exact setup with no intake choke spring or elec choke and it works fantastic. My problem was the lack of the spring on the vac takeoff. Bought the whole setup from the guys at the above link and problem solved!