I think it depends on what rear axle you use.I'm thinking that all the d35s are a swap in and go. If you get a ranger 8.8 yes it will bolt right in. Explorer 8.8(31 splione axles) you will need to move the spring perches from the bottom of the axle to the top and i think you will also need to move the shock mounts.Also be sure that the gear ratios match front and rear or something will grenade.
EDIT: i think the front driveshaft might need changed and the rear driveshaft flange, dont quote me on this, there are more people on here that know a lot more than i do about this,i'm just going from what i have read and remember.