Hi rudy,
Most of the aftermarket mini-starters have the pinion gear overhung from the starter, supported on only one side. As a result, it is common for these drives to break and/or wear out quickly. Ford SVO offers a series of mini-starters that do have the pinion supported on both sides. Although I haven't done a direct comparison, the Ford starter doesn't seem to be quite as small as some. But if the Ford starter will fit in the space available, it should be more durable. I couldn't find my SVO catalog, but I think they are available for both Windsor and Cleveland engines. In a situation like yours a sheet metal heat shield could easily make the difference between a membership in the starter of the month club, or no more problems. Good luck...Al English