Does a Model T engine affect a heart pacemaker in any way. I have been told that people with an implanted pacemaker should avoid large generators, security scanners at store entrances, large welders and MRI machines. Each of these devices sends out strong magnetic signals which could interfere with the programming or operation of an implanted heart pacemaker.
My concern would be regarding the Model T magneto or even the generator, or perhaps other T items
Your feedback is appreciated

Garry, For what it's worth-my experience with pace-maker. My wife had a defibrillator pace maker, ( Guidant), installed in 1999 after having cardiac arrest. She rides with me in a Model T on tours all over the US, with no problem from electrical interference from the Model T. Is now on her second defibrillator pace-maker--- the battery ran low after four years. At nearly 83 years, and second pace maker, we plan on doing the MTFCI Tour at Clear Lake come July

No. Pacemakers now have shielded leads.

The electromagnetic field generated by a T isn’t strong enough to disrupt modern pacemaker implants. The buzz coils aren’t capable of interfering with a pacemaker either.

The magnet in a Magnetic resonance imaging (MRI) system is rated 5,000 to 20,000 gauss. Earth's magnetic field is only 0.5 gauss.

Having a pacemaker can put you at increased risk with MRI scans. Recent models of pacemakers however have components that have been engineered to even be MRI safe.

And if you want to feel better, ground the metal coil box. This makes it into a faraday shield. Go google for faraday shield.