I bought my truck recently and mine looks like it was bought new and installed just before I got it.
So it seems they might still be available?
Sorry I'm not more help. Just trying to give you some hope.
I was going to say, hit the Junk Yards, then noticed you are in Finland. Not a lot of old Fords in your junk Yards.
It seem like when I come across a IDI Diesel in the yards, the intakes are always gone.
As old as these trucks are, I doubt these are still in the inventory at any dealer.
My truck will be going to the junkyard sometime soon. I have that part and if we can figure out how to ship it I can get it headed your way for the cost of shipping*.
Edit: *in addition to the cost of shipping i also would like some recommendations on places to visit in Finland I've been to both Sweden and Norway and had a good time. Missed Finland though, wouldn't mind swinging back through and visiting Finland.