I'd like to find out exactly how many different "front case to bellhousing" bolt patterns there are out there on WC cases. I know there's a GM and at least one Ford pattern, but what about all the other vehicles (Jeep, AMC, Toyota, etc) these were used in. Did they all use one of these or other specific patterns? I have a WC box from an '87 Mustang 4 cyl (1352-162) that I plan to rebuild using either a G-Force or Astro gearset. So far, I haven't seen a bellhousing pattern that looks anything like the case on this trans. I'm stalled until I can find a bell that will work as-is or with minimal mods... BTW, to further compound the situation, this will be behind an LS motor.