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It only bolts in after you weld on spring perches and shock brackets.As far as the rear if its a ranger 8.8 its bolt in swap other then the flange on the dif. You will have to swap the one off your old axle or run a conversion joint. Or you can do what i did and use the drive shaft of the newer truck and mate it with you stock one.
he said if you use a RANGER 8.8, which is already SOA...It only bolts in after you weld on spring perches and shock brackets.
EDIT: The link I posted didn't say what I thought....not to threadjack here but i have a 7.5 in my 87 as well and i want to swap an 8.8, anyone have a part number for the conversion u-joint? im having trouble figuring out my u-joint now and the size i need for the 8.8