I recently read Kerry McCauley's book "Ferry Pilot: Nine Lives Over the North Atlantic" in which Kerry joins the ranks of ferry pilots shuttling aircraft across the Atlantic. I found the book fun to read and now I want to experiment with a few across the ocean flights myself.
I plan to work up routes to test my fortitude to some of the closer places such as Narsarsuaq (BGBW). According to the book you need to fly to the NDB, turn outbound, fly that for 9 miles while descending to 4,200ft. Then make a standard rate left turn, descending to 3,600ft, then inbound descending to 1,800ft minimum descent altitude.
I guess the next thing I'll need to tackle is adjusting the fuel capacity of a Cessna 182 giving it the range it will need and also the weight load.