Wow! Good info there mate!! Can i get that setup just by adding some adjustable camber and toe arms then leaving the others standard?
Also, you've seen how low my 15 is.. the front lower arms actually point upwards from the subframe to the front hubs.. will that cause crappy handling? I want more lock too! Cheers dude!!
well, you will need tension rods, adjustable pillow ball upper mounts on the front and the rear traction links as a bare minimum to get the adjustments you need. Its obviously better to have the full 3 arm rear set, but i always run standard lower arms for a bit of "give" and to act as a "crumple" zone if you hit anything, rather than getting straight into bent subframe teritory. Make sure your lower arm bushes are fresh though!
as far as your arms pointing upwards, its bad, like really bad! basically, because your arms are at the end of thier operating range, several crap things happen, the most prominent being the effects of bump steer.
this explains it reasonably well in simple terms -
http://www.viosturbo.com/2010_04_24_archive.html
the only real way to run super low without having very unprediactable handling is to run the driftworks geomaster knuckles. Infact, if you buy R34 GTT kinked tension rods, Geo knuckles, rack offset spacers, aftermarklet rods/ends and coilovers, then you can run standard geo at an instant 50mm drop but with MASSIVE steering angle. you can start chopping about at the subframes and the mounting positions of the arms, but thats a little more labour intensive compared with bolting stuff on.
the problem with this subject is, short of writing a thesis, its far to complicated for me to be arsed to type out. however, with a couple of sketches, a pint of beer and an hour in a sunny beer garden, you totally get it. hook line and sinker.
so what im saying is, buy geo knuckles if you intend on doing anything silly in a slammed as S body.