[Cappt]

Man I feel your pain having to remove all that a second time. We just did one in a Turbo with rusty wastegate bolts, I'd have cried if something went wrong! That's how I gapped the sensors as well, I cut the bell housing and ground out the sensor notch so it went on nicely.
Who and how much was the transaxle rebuild? ours is not LSD so that might be something we do in the future.
Re-reading your troubleshooting no-start I'd take a look at the fuel pressure regulator also, if it's sticking too much fuel pressure can prevent the injectors from firing.