Ebay Gearhead kickdown.

I bought a throttle/kickdown set-up for my sons 74 Duster from eBay, the GearHead one.
His Duster was once running the leaning tower of power, but we installed a 318 two bbl when 300 thousand miles created a stroke.
The parts I bought are similar to Lokar, and yes, cheaper.
I found a great you tube video by search, and have instructions to follow.
WHERE THE F is my kickdown linkage on this 2 bbl carb ?
Did the 72 not have one because the Challenger was a slapstick ?