Getting frustrated cause can't figure out this issue, after doing a lot of work to the truck.
Issue poor acceleration some stalling and dyeing as well. On acceleration worse when cold but does it some when warm as well.

Things that have been done
Engine rebuild
Carb rebuild
new fuel pump and filter
new water pump
new plugs and wires
new distributor cap.
Visual inspection of vacuum lines looks good though haven't replaced them all yet.

Some possible issues
egr has been blocked off before i bought it not sure if done right.
muffler and pipe wired up not sure if catalytic is good or bad.
read some where that accelerator pump could be an issue but not sure how to check that or if that could be it.

Any one have any ideas on what this could be?
PS: The rebuilds and egr block off, were done by a friend that I bought the truck from not a certified mechanic so hopefully he did it all right.