I think I'll add some inf. Maybe it help someone.
I'm using 4x S13 Front BC Coilovers. Cant use S13 rears. They are made for double whisbone suspension. Wheels are -27,75 all around and I'm using S13 rear hubs and bearings and thay are approximately 10mm wider. So fronts are still -27.75 and rears equal to -37,75. In front I run 3.5 degree camber and almost 0 in back. Floor pans are 3" from ground and I have 3" exhaust that is 2.5" from ground. I would definately take 1/2" wider rear arches. It still rubs to perfect fit. Suspension is 8kg in front and 7kg back. Suspension travel is 4". Raised car lowers on ground only 2" and 2" has been max compress so far. I have to look on the map where I can go and where I definitely have to keep away. I can't cross speed bumps