Ok guys. So, I replaced the plugs. I did not replace the wires because of the difficulty. Truck ran GREAT for 3 days until today it decided to go back to misfiring.

The lugging went away and the idle was smooth when it was running properly.

How do I test the coils as mentioned above?

And where in the FSM is the Idle Speed Control plugs?

Looking up plug wires now... I'll also need the intake plenum gasket because it will be removed, correct?

If anyone is willing to call to help me, three 1 eight- 7 nine four 33 six two.