Dunno. When my CJ7 was converted from a 258 to a 360, we went ahead and changed over to a 304 ignition module, since they were so cheap. I gave the 258 module to a buddy who had a 258 to use as a trail spare.

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.