Ford Ranger rear end fit '71 Dart?

I've read all about the Exploder 8.8 swap, but what about the Ranger 8.8 from say '99? It appears to be almost the exact width as the stock A body rear and would only require spring perches to be relocated. I am not a fabricator nor do I have any of the equipment but I know someone that is and it seems like an easy swap. Has anybody done this? I'm only talking about 300 hp at the most and my 7 1/4 with 2.76 gears is pretty lame.