727 kickdown lever which one is correct

I am installing a fitech. Looks like I will just have to experiment..I was hoping for a bolt in and go option..
Exactly. I installed the Lokar kickdown on a 727, using a Demon Street carb. The old lever I had was off a slant six 1-bbl carb/727 setup. I tried drilling a new hole on the lever to give me the right ratio, , no go. I cut the lever and rewelded it. There are levers available which would be the easier route. You want a lever that the carb throttle travel will push all the way back yet at closed throttle the lever rests in the proper position.