The 360 uses the same ignition module (sparkbox) as the 304. And those are avilable at any auto marts store (probably have to order it) for less than $25. They're not the most sturdy beast in the world, despite being encapsulated in epoxy. After replacing a few, I now carry a spare in the back of my CJ7

1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.