I should have mentioned that it should preferably be something I can source in Europe. The JRZ looks nice and I would be willing to go slightly above 4k for something extra nice. But unfortunately they will end up in 6k$+ with shipping and taxes.
I was thinking about the AST 1-Way 5100 too.
http://www.ast-suspension.com/websho...a-gt-86-detail
It's $2000 without options. With custom springs, a piston option that sounds fancy (double digressive, whatever that means) and top mounts it's a very reasonable $2500 and they are 2 hours drive away.
Here I could really use some advice regarding spring rates. Surely AST will have an opinion too, but still it would be nice to get some outside advice.