When mounting radius rod's thru the clevis' and the hiem ends where it attaches to the frame what grade should I stick with?? Obviously grade 8 is the strongest but I was hoping to go with chrome attaching hardware who sell's the strongest best looking stuff??? Also when I attach my hair pin's do I need a spacer?? What is the prefered and safest way?? Pic's if anybody has any... thank's Ryan (the man with 1000 question's)