They don't recommend doing the CHF. I tried it both ways and couldn't tell it made any difference. My current upgrades are front and rear sumo springs, front and rear heavy duty sway bars, front and rear track bar, (mine didn't come with a front tract bar) Front end alignment verified by 2 different shops, tire pressure set by weight of vehicle, centramatic wheel balancers and a steering stabilizer. I still have to make left to right corrections on roads with ruts or uneven pavement is my only issue.
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