Rare tuner/racing lug nut from the 90s or 2000s - anyone knows what this is called?

[ager-wick]

I'm looking for a very rare lug nut for fastening a specific 90s/2000s rim. The rim is quite thick at its base where the lug nuts go, so the nuts have their 60 degree cone about 15mm from the leading edge (the one going towards the hub) and the nut goes partially into the rim, stopping only a few mm from the hub.
The diameter is 16.5mm on the part that goes inside the hole in the rim and 20.5mm on the part that you can see when it's mounted.
It has internal 12mm hex and M12x1.25 thread pitch. The total length is 38.5mm.
There's barely any clearance so any other ordinary lug nut will not go in, nor will a 19mm socket fit even if it did (unless the lug nut it 50mm long!)
It really needs the threaded part that goes into the rim, otherwise it will hang on only a few threads, and I don't want to lose a wheel while driving!
I'm having trouble locating spares as I am missing two nuts. I've been searching online and in physical stores and nobody have seen this nut before.
Note in the pictures that in addition to the 5 holes there are also 5 fake bolts made of plastic. I assume they are covering the holes of a different bolt pattern.
I got the rims on a 2000 Subaru Forester I bought a few years ago, they were on the car when I bought it. They're definitely aftermarket. Do you know what this type of nut is called or where to get them?
Or have you seen these rims before? I wonder who the manufacturer is...
I'm planning on restoring the wheels, but I won't do that unless I know I can get nuts for them.
So I'm a car nut going nuts looking for a nut, basically...

 

[Ecmbuster]

Try an aftermarket wheel supplier and bring that sample to match.
Clean the wheels, maybe there is an identification or manufacturer name.

 

[ager-wick]

I have actually contacted the companies here in Norway that are known to "know everything" about aftermarket wheels, but even they can't help, and seasoned professionals with decades in the business go "Huh, never seen a nut like that before!"... But you're right, maybe I'll find some identifying marks if I clean them up.

 

[ager-wick]

I think I might have found some!
A post in "similar threads" below: https://www.thesubaruforums.com/thr...y-rims-and-gorilla-short-tuner-lug-nuts.5590/ mentions "I also have a set of 20 Gorilla Short Tuner lug nuts (12mmx1.25b). These are special nuts that can be used with the above wheels.", so I went on searching for these Gorilla tuner lug nuts and eventually I found this:
https://www.brandsport.com/grla-21028.html - for historical reference, the full product name is: Gorilla® 12mm x 1.25 Hex Socket Lug Nuts Mag E-T (w/60° Taper) Seat Right Hand Thread Chrome Sold Individually #21028
I have attached picture of the item as well as the website for future-proofing the post.

They also have "Gorilla® 12mm x 1.25 Hex Socket Wheel Locks Mag E-T (w/60° Taper) Seat Right Hand Thread Chrome 4 Locks w/Key #21621" - https://www.brandsport.com/grla-21621.html - which uses a special key, as if the internal hex wasn't already enough to deter theft... Interestingly these 4 lock nuts with a key are cheaper than buying 4 individual hex lug nuts - go figure!

Apparently, the "E-T" part of the product name means Extended Thread.
And this nut is so obscure that Gorilla Automotive (https://www.gorilla-auto.com/) didn't even bother to put it in their catalog!

 

[ager-wick]

I found a bunch of other shops, most of them just the same shop under a different brand, also selling them but with a minimum quantity of 100...
TDOT performance:

Gorilla E-T/Ultra Style Hex Socket Lug Nuts And Locks

The Best Prices on Gorilla E-T/Ultra Style Hex Socket Lug Nuts And Locks | Free Shipping | Best Price Guarantee | 30-Day Easy Returns

www.tdotperformance.ca

Tough Rigs (and a bunch of 100% identical shops):

Tough Rigs

toughrigs.com

And here's a set of 20: https://www.sfxperformance.com/parts/GOR21723.htm (Gorilla Automotive product number 21723)
In this shop they're called "E-T Style Mag Shank Hex Socket SD Lugs and Locks"

 

[Ecmbuster]

Clean everything that is being reinstalled (brakes / rotors / hubs / wheels) and use small amounts of anti-seize compound on the mounting surface, NOT the threads.
When installing the wheels, use a torque wrench and after 100 Km of driving, torque them again.