Mangonesailor
I'm Awesome
I read a test for the dizzy. Pull the cap and see if the Rotor has any side to side play. If it does then it is a sign that it needs a new distributor.
Yes, but the real concern is knife-edging the dizzy drive gear.
Set up a screen on torque for misfires. Put a digital display of the "current" and history" of misfires in a grid as if you're looking down on the engine. See if there's a pattern. Also plot any misfires against the firing order and see if there is a pattern.
Replace that intake gasket then. Don't use a lot of RTV, just a light coat is all you need or the smush that comes out will clog your heater core... also rinse that block out and use green antifreeze.
Refurbished injectors would obviously save you money and they'd likely still back them with a warranty or something.