And so it begins,,,,,, 5-speed Duster swap!
Measuring bellhousing runout is much more complicated than I anticipated! But I think I’ve got it figured out. I made 4 marks around the opening of the bellhousing, I zeroed the dial indicator at the starting point, I stopped at all 4 spots, writing the gauge reading on the bellhousing, ending up with zero at the spot I started. The largest reading was directly across of the starting point, with only 3.5 thousands. If I’m doing it right, I should be well within Tremec specs.