Lean out and miss fire

Compression Leakdown, think about burnt/ stuck/ bent valves or flat cam

Fuel pressure. Get a gauge on it

Rotor phasing. Google that. It's a thing ESPECIALLY with stuff like locked distributors

If you have a "dial back" timing light get yourself an old school simple light, mark the balancer and CHECK it for accuracy (piston stop etc) and be darn sure you know where the timing is.

Look at the plugs Do they LOOK lean?