Wire up a 5.9 FI Magnum to 60's A body.

Ok I am old school... So my question is I have a complete 80k mile fuel injected 5.9 magnum, 46RLE transmission, complete under hood/fuel injection harness and the engine computer all out of a 99 Dakota R/T.How would I go about using all this in a 60's - 70's A body? Are there only a few wires to hook to the Dakota harness to get the fuel injection, starter,and transmission to all work in an A body Mopar. I have no clue.Easiest way I can think of is maybe use the Dakota dash harness as well but maybe not.Or go to a carb and just figure out the electrical to get the tranny to work.