Hi Dave,
If you're not in a rush or don't find one soon, I will check my storage on the Peninsula the next time I get there. I remember taking a manifold/carb (and a few other parts) off of a 65 D Dart back in the mid 80s. I don't remember selling it but also don't remember seeing it for a long time as well but can check
Btw: Are you into old Dodge trucks? I seem to remember my friend Matt asking me to go with him to drop off some old Dodge truck sheetmetal/parts to someone in Jamestown.