ATP is an authorized Honeywell/Garrett retailer(distributor?)
http://www.atpturbo.com/

Dave's got the ruler set up so you can compare the rod lengths
(Old and New [and the mods you have to make to the New] )

The ALDA is a fuel compensating device that reacts to Air Pressure...Either
Ambient or "Boost".Basically,When the Turbo raises pressure in the intake
manifold the ALDA "Sees" the rise and increases Fuel Flow Rate.'Cause
without MORE Fuel the "Boost","Doan DO Nuffin."

The intake is #5 in the first Cyrillic Pictogram,the test port will be any
threaded opening with a bolt closing it off.

#103 is the ALDA in the next two diagrams.

Attached Thumbnails

     

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'84 300SD sold
124.128