Coil Over front suspension
stay away from the magnumforce junk.. too many problems with that set up..
the alter-k-tion from reilly motorsports is the best set up out there . i'm running one in my 71 dart and its awesome... no need to re-enforce anything. its all bolt in and has its supports built in.
plus if you go small block with the alter-k in an early a-body you can run a set of 67-up headders wich really opens up your choices.