Those of us with redneck friends have been converting like this for years. Southern rednecks have more yankee ingenuity than most folks.
Well, I live in the north GA mountains, so that describes most of the people I know. After my last can of R-12 is gone next summer I think I'll let that ole boy do his Walmart conversion thing on the old sled.
That is, if it's still running by then. What I really need is a "new" old pickup.