For what it's worth, I bought the adapter kit for the kick-down from Edelbrock when I installed the 4bbl carb on the 390 in my '67 Gal. Worked just fine.
Here are a couple of pictures that I had of the carb install. Not the perfect angles, but hopefully it'll help steer you in the right direction:
(make sure to click the links to the full-size image so that you can see the pics in greater detail)
http://www.superford.org/registry/ve...a.php?id=75106
http://www.superford.org/registry/ve....php?id=116468
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