That's a great question and definitely something I would like to know more about.
When searching online, I get a link to Facebook through the 2nd Gen Econoline Page. I can read but I don't have a Facebook. My cousin posts on there occasionally, but he's been MIA lately. Anyway.http://www.fordsunlimited.com/fords...1XY-IfbxBCsYnn9rWsMQUpznLzICX1Oxf9Jin-Sk
Here is a link that is mentioned about swapping to a '71 Mustang. There is a lot of good information here about the swap. Lokar has the cables needed and apparently it can be a straightforward swap if you can get everything needed in one go from a parts van/car/truck and not have to piece it together over time.
Hope this helps.