What size bolts do I need if I am removing 2 leafs out of my rear springs, I have read that I need shorter bolts for where the springs sit on the saddle, I am picking up a used pair of leafs and am going to remove 2 leafs but there are no parts stores near where I am picking them up at or where I am working on it at, so I need to get the bolts before I head over that way. I am doing it in the mornin so any help would be great thank you