I'm having a similar problem with my '89 Shelby Dakota. I had it running for a while, then replaced plugs, wire, cap, rotor and no start. I had fuel and spark. Replaced the hall effect sensor in the distributor and still no start. I'm in the process of replacing the ignition switch and I've unbundled the engine wiring harness from left fender to right fender looking for broken wire or bad splices. No luck, so far.

Poorboy - I haven't see the splice you're talking about, so far. Is it possibly close to the engine itself where the wire break off to go to the crank sensor, MAP sensor, TPS, etc.?