ok so I have yj springs and just cant wait any longer to go spoa so while im waiting for enough cash to come in so I can get the ott and yj mount kit I am going to be taking either 1 1/2" springs or stock springs from a buddy and doing this upgrade. what I need though is what the size of ubolts I need are. Can anyone help me out with a size I will need to get around the axle and be long enough for these springs? I dont have my samurai right now since its at a buddy's house so I cant grab my ubolts.

Thanks guys, Brandon