Updated The Fuel Pump..., Getting the late stype F.I. Pump to work. Options

[74914LE]

Before I spend much more time trouble shooting, I thought I would seek some wise advice.

The 74 2.0 ltr. (Fuel Injected) had been sitting for about 4 years when I baught it. First task was to:
- clean out the fuel tank, including screen.
- install stainless lines
- replace all the hoses
- installed new fuel filter.
- cleaned all the electrical connections.
- validated the fuel pump circuit.

After validating that the pump needed to be replaced, I decided to update to the 75-76 late stype fuel pump, just to get it running again. To quickly move it along, I put the new pump in the same spot below the battery as the old one, just had to modify pumping for the two fitting pump. After installing, when I engage the ignintion, the pump runs for a couple of seconds and then cuts off as it should.

The problem is that I am not getting any fuel to the top of the engine. After engaging the circuit a few times, I cracked open the delivery line, and I heard a pressure sound, like it had a vacume on the line. The return line from the pressure regulator has nothing in it when I open it up. I have validated that fuel is getting
to the pump, but it is not getting through it. I wired into the normal fuel pump electrical socket. Any ideas to determine why it might not be getting fuel?

Thanks in advance!