The sig will keep spreading like a disease.

 

Post some pics of your car with the springs. I want to see what the drop looks like

Edit: now I see your other post. Looks good.

 

Thanks. They are perfect with the sedan Sport shocks. No bottoming out. No porpoising like my old stock suspension '03 Z. Just as comfortable as the stock springs, but dropping the center of gravity on the vehicle 1.6" all around leaves the front/rear bias alone as well as gives it awesome turn in. I had an S tune G Attack on my '03 Z and the ride was slightly rough with less of the classic Z bounce, but Z33 RS*Rs on a G35 sedan with Sport shocks only complements the original design of the car. My turn in is markedly crisper and the 22% stiffer rear bias spring rates dial out must of the inherent understeer. I rushed some speed bumps at 30 mph just to test the travel and strength of the Sport shock valving and there were no ill effects. No blown seals; nothing bad. These RS*Rs ROCK! They drop as much as Tein S's, but only have 1 coil of the spring dedicated to "progression" with the other coils being linear.