[rotorwrench]

I've read on other model T forums that the True Fire system is no longer supported. If it still functions then it can be used as is but once a component dies then it's on to a system that is still being supported. A lot depends on if the flywheel magneto is still functional as to whether the OEM style timer and trembler coils will function properly if reinstalled. They can function on battery alone but it's nice to have the magneto function as well.