They are really hard to find over here as well because these trucks are very rare themselves.
This is a glove box option sticker from a truck in Sweden (not mine though) with some options that might be rare.
Pic #2 is the Kilometres speedo from the same truck which I believe is the U18 option listed as SPEEDOMETER EQUIP.

Pic# 2

Lemield,

What kind of Auxiliary tank do you have? What year of truck? I've never seen that option code for an auxiliary tank before. I've seen an auxiliary tank mounted like a suburban tank in a service manual, just wondering if this might be it.

Bob

Hey Bob,

Check out this thread. Roger0080 answeed the question about the tanks. It is factory.

http://67-72chevytrucks.com/vboard/s...=156045&page=2

Excellent! I saw this setup in the 70 GMC Service Manual but I had never seen one on an actual truck and was starting to think it was one of those options that was proposed and never quite made it into production. It looks like they just put a blazer tank setup into a pickup. Congratulations on the RARE option!

Bob

Side tool box. Parts for a side tool box.

Options
 

How about INFLATION FIGHTER, code is YF7?

The rarest option I have seen is a shoulder belt for the back seat on a BLAZER.

There is a picture (drawing, actually) of a gutter trim piece-(stainless, I would guess) shown in the factory assembly manual, and on that page it shows "cancelled". I've never seen this on one of these trucks, but I'm guessing it would be pretty rare;if at all in existence. Sorry, I,d post a pic if I could,no can do.

Uncle, do you know what INFLATION FIGHTER, code is YF7 is???? What was installed on the truck? I have seen it listed but cannot find any info on it....

Option
 

I have no idea,just found it in a truck at the junkyard.