engine crank but does not start

What we did....
first we had an 86 tpi car with an hei dist. and MAF we take everything out
I had a 91 z28 donor car for the swap so i deside to take everything, easier said then done, its a MAP engine with coil away from the dist.

we change underhood harness, now underdash harness, took the cluster and sterring, ecm

now probleme not able to find the fuel pump wire in the kick panel, we are able to start the pump when jmping it directy on the connecter under the car. So it should atleast run for 2-3sec.

The car was runing great when it was in the 91

this car is starting to make me sick....and its not even mine

Thanks for the help sorry if there is missing some info im missing some sleeping this past month since im working near 100hrs a week because of this car

Seb