Driving around all day, then it just Died Out?

[YourBuddy'sTruck]

I drive every day, but only 10m total.
Today, I do my deliveries and after stopping at a dozen places and starting up and leaving (about 50M total), I get all the way back to my origin and it putters and dies out like it's outta gas?
Only it is not outta gas?
I ran it outta gas a week ago, so that has me thinking I killed the fuel pump.
So I shoot starting fluid in there and no fire?
Shouldn't it fire on starting fluid alone?
I finished my errands in the other car and went back.
It's cooled down.
Plugs not fouled. Still no fire on starting fluid. Some kid stopped and helped me check for spark and it's not getting any arc from wire to grounded screwdriver?
Gonna go back in the AM and try again with a buddy that knows what he's doing.
Looking for any advice on what to go to first???
Also, will my induction timing light let us know if there is spark while cranking it over?
Looking for some good Uncle/Dad/Granpa advice here.
This has never happened before and usually runs great with possible starting fluid at first crank of the day.
Thanks in advance.

350, w/350TH, HEI, Modern Alt, Original Fuel Pump, Quadrajet 4 Barrel, good plugs, no vacuum leaks