no fire could be the coil, crank sensor, cam sensor (inside the dist) or the ASD (shutdown relay).
When my crank position sensor was going bad, it would start but run like crap.
I don't like the idea of just throwing parts at it either, but you have replaced most of the ignition system already. I would try the cam position sensor, followed by the crank sensor. But first check the auto shutdown relay, which is located in the fuse box.
edit: are you getting fuel to the rail? If the ASD is triggered, the fuel pump will not run.
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