So, when I try to accelerate my truck Bogs down and either dies or nearly dies. However it idles okay. I've replaced the cap and rotor, just pulled the distributor to check if the roll pin was sheared, got new sparkplugs and wires, a new carb and a new fuel pump. I just can't figure out what is wrong other than maybe mouse damage as I see some of the wires have been chewed. Any advice would help.

 

You might want to spray around the intake manifold mountings for intake leaks.

What about the ign coil?

 

I have yet to replace the coil, thanks for the advice. I'll for sure check the intake

 

Loosen the exhaust pipe and see if it runs better, you may have a plugged exhaust system.

 

Much easier to diagnose an exhaust restriction with a vacuum gauge.

 

Raski offered a good suggestion.
What you are looking for with a vacuum gauge,
Connected to intake manifold, note vac reading at idle, then raise RPM up to around 2500 RPM.
IF vacuum reading starts going down and continues to go down , exhaust syst is restricted.