The Kingpin length really only changes the amount of droop the front will have. If you are going Mag/Pink then I would say run very little droop in the front. If you have a set of digital calipers then it's easy to set it the same side to side. .404" is the measurement from the bottom of the steering knuckle to the bottom edge of the e clip ring in the kingpin. that's a good place to start.

Biggest thing is make sure your car is balanced side to side. and the car is not tweaked.

Check out the thread http://www.rctech.net/forum/californ...ll-so-cal.html