CA Smog & That Speedo Cable/Vacume Gadget/EMS

["Shubin, Pete" <PShubin@domain.elided>]

I held up my end of the bargain with my wife and finished 
my last remodel on the house job a few weeks ago.  
Sunday I got to play with the Scout again for the first time 
in a few months.

I was checking the SMOG stuff because I think I will still 
need to smog it when I register it. The Scout is a '72 with 
a 258 I-6, T-18, and EMS (Engine Modification System) not 
an air pump.  This corresponds with the SMOG sticker on 
the inside of the hood on the drivers side.  (Thanks whoever 
sent me the paperwork on this several months ago)  It has a 
gadget (lets call it the EMS box) that the speedo cable from 
the transfer case connects to and another cable running 
from the top of it to the speedometer.  One vacuum hose 
runs from this gadget to the intake manifold and another 
vacuum hose is plugged up.

I have two questions.  What does the second hose connect 
to? And where can I find a new EMS box?  The threaded 
portion that the speedo cable from the transfer case bolts 
to is broken off.  I'm going to see if I could connect the two 
cables together and bypass the EMS box but if I need to 
SMOG the Scout I will need a new box.  

Any ideas?  I know this was discussed on the digest a 
while back and the information is out there.  That's what 
made me go looking for the thing.