I have a set of these. They are by no means cheap or easy to make, Nagisa braces are made from aircraft grade lightweight aluminum. And are a little more geometrically tricky than they look. There is a reason they retail for about $395 US a pair.
But on the other hand they are a worth while investment if you want to stiffen up a slightly soggy front end wich all S13’s suffer from.
Perhaps mine could be copied… we shall see… 
I’ve heard these don’t make a huge difference for most cars unless they’re severely weak in those areas from rust, etc.
that could be bad info, though.
ah cool… well i was just posting it all id know is what i read… and found it interesting.
Who wouldn’t want something relatively cheap tha twould make a difference to the way a car is stable, handles or responds, etc…?
But cool…
because they are not as “cheap” ot get or produce as people think.
$396 USD retail from “More-Japan” (a Tanabe company)
Yeah these braces are made of thick aluminum which isnt cheap, want to lower the cost make it out of SS or even cheaper make it out of steel and paint it, simple enough.
Aluminum isnt the greatest choice for bracing thats why its thick, make it out of thinner SS and the weight difference will be negligible (to an extent)
Am I the only one here who understands metalurgy and the basics of structural dynamics ?
In cases such as this, as well in many others, Aluminum can and often is significantly stronger (if alloyed properly) than most mild and stainless steels. Thats why to gain the same structural rigidity from a steel product stainless or not would take significantly more material. This isn’t just “thick aluminum” its a high grade aircraft aluminum. Again these things are very deceptivly simple looking. but in fact are quite difficult to reproduce with the same effect from another material.
I’m not saying it can’t be done. But I would expect the cost of reproduction etc… to bring them near the $300 Cdn level for “knock-offs” as it were.
There are always substitute material you can use to make this cheaper, of coarse the weight difference will be huge thats what youre paying the big bucks for, strong light material.
5052 grade aluminum is mostly used on aircraft parts, marine parts and other heavy duty parts, I called my supplier they cant even get this grade of Aluminum.
But there are other materials just as strong that can replace this grade of aluminum just without the weight savings.
There are always ways to make things cheaper
300$CDN is already much better then 400$US+customs.
Or you could take two pieces of steel and weld them there 