please, please, please, do not let this turn into the act vs jwt clutch setup that we saw on the mailing list, I would only guess that the gab setup would be stiffer that the agx b/c the gab is leaning more towards an auto-x setup while the agx is geared towards a street setup, do not quote me on this as this is only a scientific guess and am not trying to say that one IS stiffer than the other. personally I think the gab struts are a rip b/c I am sure that the agx has a setting somewhere along the lines of the gab (same stiffnes, damper, ect), only $300 cheaper, sure I would buy em' if I had the money though.