1970 CST-20 carburetor question

[jpekarek]

First post here, love the site. I am looking for an answer as to exactly which carburetor came stock on my truck.

I just picked up a well preserved '70 CST-20 long bed w/350 4bbl and an T-350 auto. No air, 2wd. All original, except it has 3 carbs with it. The one on it is not the right one, the previous owner just bolted it on to move it. He said one of the other carbs is the correct one but not sure which.

I have been calling auto part stores for a rebuild kit or a reman carb, but they keep asking me "What carb is on it"? Then they list off 10 different models of Q-Jets.

I'm pretty certain that with particular engine and tranny combos there was just 1 carb offered for what ever truck you ordered. I am trying to find out what carb is the correct one. Can anyone point me in the right direction?

James.