difference between 16136965 and 1227747

[steve ravet]

Comparing the ECM pinouts of these two, there are only a few
differences:

Cannister purge:  6965 has it, 747 doesn't.  How does cannister purge
work in 747?

AIR diverter:  747 doesn't have it.  Do the trucks have an AIR pump?  Or
just no diverter?

A/C relay:  the 747 has this marked "EAC solenoid".  Is that a misprint,
and it should be "AC relay"?  The 747 schematic shows it as a solenoid,
not a relay.

Power steering pressure:  Guess the truck doesn't have this either.

IAT:  747 is unused.  Isn't IAT needed to calculate air density?

Motivation for asking is (1) to convert my S-10 from 6965 to 747 and
participate in prog 101, and (2), to get rid of the AIR pump, which
makes it very difficult to get to stuff on the pass side of the engine. 
I have to replace an exhaust gasket on that side anyway, if I can dump
the AIR that'd be great.  In this application, AIR pumps only to the
passenger manifold anyway, not to the drivers side or to the cat.

thanks,

--steve