Just keep the DIS, stronger spark, and use the ranger harness, it'll pretty much directly fit, you only have to move about 10 wires at the ECM for the turbo ECM... it's by far the cleanest looking setup... I mean, you could use the T bird harness but all the wires are already there... if you find a connector that doesn't match up, use the component off the Ranger engine... except the airflow sensor, you need the T bird one...
Keeping the DIS is as simple as removing the front seal housing from the Ranger engine, making a template off the Ranger engine for the holes to mount the crank sensor bracket, drilling the holes to tap for 6mm bolts, cut the head off of a 6mm bolt to use as a pin for the alignment pin then Loctite it in place. It's pretty easy, and the engine compartment is cleaner without a distributor...