90% of no-run and performance problems are electrical, not fuel, at least on old school engines. Don't belived me? Look at any quality technical texbook in troubelshooting. It's ususaly the opening f/ing sentence in the introduction.

I'm not big on throwing parts at a problem as a way to troubleshoot, but based on your description, this would be an exception to the rule.

If it were my car, I would throw a coil at it. This is one component that cannot be tested because--duh--it will always work when testing it. Also, it's a textbook coil failure.

But it's your car, so use whatever other approach makes you happy.