Been there and done that. Start with one thing at a time. If that truck sat for some time then fuel would be as good a place to start as any other. Sounds like you have spark and compression so those are off the table for a bit. Old fuel and new fuel are not friendly mixers. New fuel will sorta dissolve the residue from old fuel. That makes for a sticky and often gritty mix. Quick and dirty fix? One fuel filter between tank and fuel pump. Second fuel filter between pump and Carb. Test drive. One down and more to come...:) Pull the line from the pump to the Carb. Put a catch can under it and see what the pump is doing. Got fuel;? Good. Don't? Change the pump. Pesky problems are sure to follow. But with the filters in place at least you won't hurt the pump or the Carb kit you just put in, that is good. If you were so unlucky as to get something like I did you will have a clogged fuel line from the tank to the pump. Quick fix? Roll a bit of fine metal screen about 3 inches long and push it into the tank outlet right at the tank, if you have the line from the bottom of the tank. If you have the line from the top of the tank then you might have to pull the sender out to clear it. Pull the line off the tank and the pump and push some air through it. Got fuel and still got issues? Time to check that the needle and seat in the Carb are not stuck. Are you having fun yet? I went through all of this and then my points lost the rubbing block in an intersection. Still the most fun thing to drive ever! You will get it sorted, you will.

Steve H