If you hadn't already bought the coilover sleeves then I'd suggest Bilstein as a good alternative to the Koni. Have you bought sleeves to suit the OEM shock diameter? If so I'd assume they won't fit the Bilsteins anyway, due to different shock diameters.

Quote Originally Posted by neut View Post
Sorry to kinda go off topic. Instead of using Eibach springs(Supplied with the Ground Control), If i choose to switch it over to Swift Racing springs.. Would they fit?
No reason you can't. I'll be doing this to use some of the springs I have lying around.

Quote Originally Posted by DreadAngel View Post
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Hmmm, if you're planning on running 6k/4k then I'd definitely recommend Koni Yellows and perhaps have them revalved to suit. Koni Yellow pretty sure won't be able to handle 6k/4k 'well' and I'm not 100% if Koni can revalve the Koni Orange [STR.T]
I've heard numbers of 500lb/in as a comfortable limit of the Koni Yellow, roughly 9kg/mm. I wouldn't revalve at the threadstarter's proposed rates, seems like it would be right in the middle of the Koni's happy range.