340 Full throttle hesitation

Not sure. Im pretty new to all of this. I believe it is the stock ignition.

Then take a picture of the engine compartment and post them so we can see what you have. Get everything from both inner fenders and the firewall. More than one picture is good, maybe one whole pan view, then some closer up views. Pull the cap off the distributor and take a picture of the insides under the rotor...