my brothers 65 was 4 maybe 4.5 and 6, We didnt have to notch it but it sat close to the frame after the bump stops were cut off,he didnt have a problem with it bottom'n out unless he was haul'n a pretty good load.All the stuff we used was second hand aftermarket drop springs that we cut even more,the frontend could'nt be alligned corectly,but it got close,with spindles your good on that part of it,I'll get some pix from him and post them for you,It looks good,it sits level with 235/60-15's in front and 255/60-15's out back
