Originally Posted by cvc 22349a
M3 camber arms are aluminum instead of stamped steel. The lower shock mounts eliminate the rubber saddle of the oe arms, and I believe the bushings that mount to the subframe are firmer than oe. You can't get a set of M3 camber arms for $250 anywhere else.
Springs are springs. I'm sure GC has Eibachs in any spring rate you want.
btw, if you're increasing spring rate, you should budget for M3 or firmer subframe bushings.
Are the Koni's in the GC kit the same as the OTS yellows with non-external adjustable rears?