Then when I gave it some more gas it blubbered and died. I hit starter and it just cranked a bunch. Then it seemed like it 'dragged' a couple times and I heard liquid dripping. I look under truck and gas is dripping from the header coupling to the tail pipe.
At this point you're sure it's gasoline and not coolant/water?
Either way, the liquid coming out means that too much is in the combustion chambers, which would also explain the dragging feel during starter cranking.
If you heard it dripping, it's a LOT! Which seems more like coolant, because I can't imagine what it would take to get that much gas into the engine in such a short time.
For gas, the float needle can get stuck open from it's seat, or the float itself can be stuck down. This would let gas flow into the car in an uncontrolled manner from the fuel pump.
This can cause enough to go into the engine that some would conceivably flow out the exhaust ports and into the headers where you see it leak out. But to "hydraulic" an engine (the action of liquid in the cylinders keeping the starter from being able to turn the engine over due to liquid not compressing) takes a lot of fluid. Much more than normally I would think a fuel pump capable of putting out.
But hey, it's a new pump so anything could happen I suppose! And maybe I'm not able to follow the timeline on this event and it actually did take longer and give the fluid enough time to flow into the engine.
Either way, pulling the plugs is a good idea. If you do and then crank the engine you will probably see lots of liquid shooting out of the plug holes.
If it's gas, the only place it can come from is down through the carb and into the intake. If it's water/coolant, it can be a blown head or intake gasket. Or worse, a crack in a head or the block.
None of which are good things, but some of which are not the end of the world either.
Good luck.
Paul