I've checked everything, what's left?, My car is downright REFUSING to run Options

[JDW914]

Okay, so a bit of background.

Late last year, my car ('74 2.0 with Mark De Bernardi's 2056 hardware kit) suffered a betrayal from one of the old Bosch injectors, resulting in a fire which, while happily small and caught quickly, ruined the engine wiring looms, MPS, and battery. I figured repairs would be pretty straightforward - and they were. Got parts frome eBay, and new looms from Jeff Bowlsby, took the car to the shop of the painter who did the original restoration bodywork on it, and dropped, cleaned, and rewired the engine while he fixed the decklid and rollbar up. Threw the engine back in, got it running, tuned it to perfection, and went to reassemble the car.

Now this is the point where everything started going very wrong. We put the decklid in place and went to install the trunklid, and the trunk hinges both sheared at the bolt. I replaced the bolts, and we noticed the sheet metal flex mounts for the hinges were both nearly undone at the welds as well, so the painter offered to weld them up, which I agreed to. We disconnected the battery just in case, welded them up, and assembled the car. I got in to drive it away, and the car would not start. Engine turns over, kicks into life, then dies.

And this is all I've gotten it to do since, and I am out of ideas. EVERYTHING checks out and is working, to the point where I'm not sure how it's physically possible that this thing isn't running.

So far, I have verified:

- There is good fuel pressure (32-33psi at prime, 33-35psi during cranking and running)
- All 4 injectors (matching, new SMP FJ6 units) are firing
- There is spark, and it is timed correctly
- The point dwell is optimal (about 47 degrees)
- There is strong compression (around 140-155# in all cylinders)
- The valves are all actuating, and have correct lash
- All electrical and pneumatic connections are secure

And I have tried:

- Draining the tank and using fresh fuel (what was in it was several months old)
- Swapping coils from the stock-alike to an MFD Blaster 2 with appropriate ballast in case the coil was failing to charge up at running speeds
- Swapping the ECU out between a NOS replacement and the original which seems to be free of damage
- Setting fuel pressure all the way up and all the way down as far as the Bosch regulator allows
- Clamping off the cold-start injector
- Starting the engine while hooked up to a battery charger
- Unplugging the TPS

Not a thing so far has produced the slightest change of behavior. The closest I've gotten to having it run is, with WOT, holding the starter keeps the engine "running" at about 800rpm, with constant combustion, but no pickup of rpms or power, which is still pushing me towards either spark or fuel mixture.

What has me completely aghast, though, is that this thing was running perfectly and not a thing has changed. I'm beginning to think it's just angry at me.

What the heck am I missing?