You use new 258 plugs. I just bought champions. Cap adapter, distributor cap, rotor, 8mm wires, and TFI coil are all from the ford. You might want to fab a mounting bracket before you get started. I just zip tied mine to the wiring harness on the firewall temporarily until I can rig something up to mount the coil.
86 CJ7 Laredo- '98 4.0L , '94 Fuel Injection and Electronics, 2 1/2" skyjacker, 3/4" Rock Crusher shackle , 1" body lift, T5, DANA 300, D30 front w/Aussie locker , amc 20 rear w/Aussie locker and Moser axles, 3.31 gears, and 32" BFG MT's.