John Mummert (6/3/2011)
Mark, it would be possible to install 40DCNF Webers on a 3-2 intake but I don't know of any adapters. Maybe rottenchester 4-bolt to Holley 3-bolt if available.John, I was thinking of three of these. I don't know much about the Webers other than the progressive one Ford ran on the Pintos.
http://www.thehotrodcompany.com/shopnow/show_dept.asp?dept_id=50&filterkey=adapter
I looked around the web and found a UK company, Webcon, that markets Webers and intakes. They listed a 3x2 Weber set up for the Y Block using an Edelbrock 573. The K9124 kit has since been discontinued on their current website.
http://www.webcon.co.uk/weber/USPerformanceKits.htm
57 Black Tbird 312/auto