How common are the EJ22's with carbs down there? (I thought the carb models were EJ15's or EJ16's?)
The EJ15 engines that came with factory Carburator + Distribuitor setup, were available in the Early Imprezas (1993 ~ 1995). Those 1.5L engines are Still Available even in the Newer impreza lineup, but they comes with EFi now.
The EJ16 engines that came with factory Carburator + Distribuitor setup, were available in the Early Imprezas (1993 ~ 1995) and Early Legacies (1989 ~ 1994). Those 1.6L engines are Still Available in the Newer impreza lineup only, but they comes with EFi now.
This is a Picture taken on one Street of "Comayagüela" City in Honduras, a Couple of Subies can be Seen There, you'll Notice that the New Impreza Bears the: "1.6" sign in its Back. Sorry for the Poor Quality Cellphone Picture but it gives the Idea:
Also, Early Legacies from 1989 up to 1994 were also available with the EJ18 and EJ20 engines, featuring factory Carburator + Distribuitor setup, and by the ones I have Seen and Repaired, plus the Dealer's service Books, I Can tell you that the Carburated EJ models' intake Manifold (LADM Specs EJ engines), does have the Water crossover integrated on them, like the Older EA engines, So I believe that those LADM intakes Won't fit nor bolt on directly to the USDM EFi EJ Engines.
The Distribuitors Used by Subaru on their Early EJ engines are two different ones, with Different part Numbers.
The one used on the EJ15 and EJ16 Engines is the Subaru part Number: 22100 - AA460, which is Different than the one used on the EJ18 and EJ20 Engines, which is the Subaru part number: 22100 - AA550.
I ask for all the folks that would like to have one of those distributors for their EJ22 here in the US.
If you could aquire those distributors (even a few) or get a part number for them there in Latin America.... I'm sure folks here in the states would make it worth your time.
Yes, I Know...
Around a Year ago, I Have been Asked by another Good USMB Friend to Search for one EJ Engine's Disty... I Already found those Part Numbers and also took a Picture with my Cellphone of the Dealer's Parts Book for the EJ18, See:
This is a visually enhanced version of that Pic:
The Only Problem is that the Dealer Doesn't have any Distribuitor for sale... and they wasn't able to Ask for it to one to their Providers... I Already asked for one EJ Engine's Distribuitor to the other Central American Subaru Dealers, and I received the same Answer: No one Left available 
it is an "Obsolete" part, out of stock. 
If there are any junk yards down there - the manifold's (if they fit an EJ22) as well as the distributors would be useful up here.
GD
Yes, we have Lots of Junk Yards here, called Locally as "Yonkers" as you can see Photos & info ~► Here, but those only have Parts from Vehicles that came from USA ... 
... Really, (Usually crashed vehicles from USA, sold by insurance companies) No Local Vehicles allowed there; also here cars seems to Last Forever due to NO Salty Roads and our Caribbean Warm templated Climate, but when a Car becomes unuseful, in example involved in a Crash, usually the owner is the one who sells it in Parts, So that's not Easy to find a Crashed Legacy here...
I Asked for help to find that Disty to Lots of People... my Dad too and he has Friends who travel in 18 Wheeler Trucks all across Central America, they searched for it too... Long story Short: I Just found one Used EJ Distribuitor available in Costa Rica, but it was Damaged. (Burnt Module I Guess)
Lots of LADM specs Legacies can be seen Runnin' Great Here and is very Rare to find one for Sale, That was one of the Reasons I was very Happy with the one I Found for Sale, untill I Heard the Price...
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