So I need some help on figuring out why my 87 Dodge Ram 50 2.6 will not start.

Background:

I pulled the engine and trans to replace rear main seal. When I placed the engine back in I replaced the alternator, radiator, water pump (started to leak when I filled it back up), spark plug wires, rotor, and rotor cap.

Upgrades:

Pacesetter Headers
Weber Carb ( I did not put any of the vacuum systems back in because I was told it was not needed with the new carb)

After everything was hooked up and refilled I went to start it, the truck was about to but I did not fully start it. 5 min later when I tried to start it, all it does is crank but won't start. I know it is getting fuel in the carb and tested the spark with a screwdriver. There was nothing wrong. I am also getting the 12V form the ignition wire. The battery is brand new. I am running out of ideas on what is wrong. I attached pictures of the engine compart if it helps with any ideas.

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