If a car stalls while in gear for a 'few seconds', you'd know it. Do you clutch and declutch to compression start it again or are you able to do nothing and it starts running fine again?
The dizzy is the distributor and the part that fails is the PIP, aka Profile Ignition Pick-up, aka ignition stator (what it's often called at Ford or some parts stores).
Start with pulling codes - if you see a PIP or IDM code, that will be telling. There are a few other components which can cause similar issues, hence why narrowing it down is so important.
For a quick check, remove the dizzy cap and rotor, and look inside the bowl. If you see metal shavings, that's a tell (bad PIP). IF you try to move the components inside the bowl (The PIP is two piece) and they move, that's a tell for a bad PIP. A magnet can help you find shavings (because the PIP works on a magnetic field).