Its interesting that for the last 30 or 40 years, the camaro front clip was THE choice for building circle track cars, all the way from streetstock to camaro clip late models. Seems unlikely that there is some major flaw in them if they work so well in those situations.. Lots of people think running high spring rates is the answer all the time, and thats not allways the case.. A suspension must work, to keep the tire planted.. If he has huge tires, they are probally doing all the flexing!