After digging through this & several other forums, I see the question comes up a lot & the answers are very sketchy. After hunting for images, I found a picture of the proper setup...which set off a light bulb in my head:
Once you see it installed, its very simple. Detent cable sits on that bottom horn of the throttle linkage next to where the return spring mounts, so when the throttle is pulled back, it pulls the kickdown forward. I looked again at the picture of the carb on eBay & its got a hole there for a stud, so I think we're good to go. I went ahead & ordered it. Thanks for all the help as always guys!! Wish me luck.