on my 68 dart race car the bump steer was horrible, every bit of inch and a half. on my previous car , a 75 duster I did the bending of the outer tie rod end, it helped a lot. on the dart I was able to buy adjustable upper control arms. bobs pro fab for the win! once I had 4 degrees of caster the bump steer was almost no existant. now 4 degrees of caster is probably too much for a street car, especially with man steering. on a race car works great.