Kickdown setups

Hey guys, I'm trying to get a 67 dart gt with a 340 to run right, it wont kickdown properly. I have alot of different styles to swap on but I'm not sure which one is going to work the best, Does anyone have pictures of a kickdown setup with a 340 and an edlebrock carb?

I was driving it today to test it out, and when I manually shift to 2nd, it doesnt feel like it kicks down, then when you punch it, it heasitates then kicks down and gets moving which means there is also a screw up in the trans linkage, is this part of the problem or just another matter that needs to be adjusted??

Here is what the car as on it right now:






My dad has a trailduster with a 340 and eddy carb on it, this is how its setup:


This setup works fine.

Here are some other brackets I have:



another:



My dad thinks these are the old style, where there was a single rod going to the trans, correct??:




And another question, this carb was given to me by the owner, says it was what was on the engine, is it worth anything, from searching on google its a 71 year model, and a one year only part, good for restorers, thoughts?? its a carter thermoquad 6-2146




Any help is greatly appreciated.

Thanks,
Jack