Good write up !
But I would disagree with the Ignition system being the only cause for misfires.
Amost all the misfires I've seen(from the 3.4 & 2.4) are from the injectors shorting out, or just not pulsing the way they should due to being dirty or just bad.
Not all , but about 80%.
And any multimeter can test
ALL of those ignition parts to make sure they are bad.
Makes no sense in wasting money on things that are not broke, unless your rich and have money to burn , in that case send me some
