'68 318 to carbed Magnum 5.2: Check my checklist

I know they exist, had one on the carter competion series on the old 318 that was originally in my duster, just not sure of what thread the carb is.
But I do remember buying the fitting from summit.
Maybe give them a call?

Found them at QuadraJetParts: http://quadrajetparts.com/inlet-fittings-c-299_130_133.html

I still reserve the right to get super pissed at paying $12 + shipping for a $4 fitting... :banghead:

-Kurt