20mm longer control arm pins and a 96 mustang bump steer kit with early offset inner tie rod ends. Had to free hand drill the M030 spindles with a 7.15 degree reemer, but it worked out great. Also the spindles are reamed to 19mm. I seen that pelican parts sells a 20mm longer pin for the stock control arms. But they are not as beefy as what I have(Charlie arms from Wrightwood racing) or what racers edge has to offer in regards to strength in a longer control arm pin and the control arm itself.