I see there is no governor on the trans. Does it have a full manual valve body?
Yes. When they tore it apart, they discovered that the reverse pattern manual valve body that was in it didn't have any compression braking in it (I guess this was common in older versions of the manual valve bodies) so they put a proper one in there. The deep pan didn't have a corresponding deep pick up to go with it so they installed one of those too. Apparently the converter was totally trashed but the inside of the trans itself was in relatively good shape.
The C4 adapter is one of the earliest versions - predates the "STROPPE" cast ones according to Andrew, which historically confirms that this was one of the first trucks that Stroppe likely converted to an automatic back in the day.
One of the steering box bolts won't come out without cutting out the lower radiator mount either. The box and pump were removed and sent to Tom Lee for a rebuild. And the tulip joint at the box/shaft interface is getting replaced too.
Todd Z.