this is just a shot in the dark, a fwiw or a wild guess! Even with the main DIS connector from the ECM plugged in upside down ( yes it will go on, but will bend one pin...ask me how I know this! ). The car will actually start & run. It runs on the limp home ignition system which is managed by the ESC ( electronic spark control ) box mounted on the blower motor case at the passenger side just next to the washer bottle. Make sure that box has it's connector plugged in because that box is actually what starts our motors...or at least that's how my lame brain reads the ignition system discussion in the FSM.
If the DIS box connector gets a bent pin it will set a code and go back to the ESC box for ignition control & function. I do think if the ESC box craps out or is unplugged the car will not start, but the starter will turn. I'd check the gauges fuse first though! That would be a better bet IMHO than the wild guess that I just put forth.
You are sure that all the coil rack and DIS box connectors are plugged in & seated? You put the insulators under the coils' plugs?
You are sure the the cam sensor and crank sensor are plugged in?
All the ECM main plugs are in right?
I would do a KOEO grounding on the ALDL to see if the SES light flashes anything but "12".
Okay that's all my senile brain can come up with.
Tom