Is it throwing any codes Jack? There is a code for insufficient spark from coil, cant remember what number it is.
But, if you are getting good numbers as far as ohms, then maybe its further forward such as coil wire or the button on the inside of the distributor cap, or the tab on the rotor?
'87 YJ, 4.2L built and bored, 8" of lift, 8.8 rear, AX15/NP 231J, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...