2002 Ford Excursion Cranks but Won't Start

2002 Ford Excursion 7.3 Powestroke Won't Start
This morning I noticed that it was taking a little longer to fire up, but thought
nothing of it. I ran several errands around town during the day just fine. Then
my wife and I drove an hour and turned it off for 10 minutes. When we got
back in, it would not start

The engine turns over quickly and strong.
Newer alternator and batteries within the last year. Voltage 12.7 at both
batteries.
Glow plugs relay clicks on. 12.7v on the one big post and 8.5v on the other
when the key is turned on.
Fuel tank is 7/8 full.
The curly-q wait to start light comes on like normal and then goes off after 3-
5 seconds.
The previous owner replaced the fuel bowl with a electronic frame fuel filter
and pump. There is a fuel gauge on top of the valley. When the key is turned
on, the pressure gauge goes from 0 to 65 psi.
When cranking, the tach gauge does not move and RPMs stay at zero.
When cranking, no smoke comes out the exhaust.
Oil was 3 quarts low, but has now been topped off and same result.

I have not touched the ICP sensor, IPR, or cam sensor.

Any thoughts? My old 7.3 OBS had the fuel bowl heater short and blow that
30 amp fuse, but I don't have a fuel bowl in this beast and I don't know the
details about the fuel system since it was done by the last owner.

Here is what his ad on Craigslist said about the truck before I bought it about
4 months ago:
"Stage 1 injectors, bigger turbo, adrenaline HPOP, S&B cold air intake,
regulated fuel return with stock filter delete, new frame rail fuel filter, oil rail
cross over lines, DP tunes, MBRP exhaust, Quick-Start high output
alternator, mean green gear reduction starter. Valve cover gaskets have
been replaced and glow plugs with injectors."

Thanks in advance for the help!
Michael