[ron david]

there are quite a few differences among the years. 60-62 the frame rails are lower by an inch body mounting is different, bumper mounting is different and the eng mounting is different. 67-72 body mounting is different, frt frame horns are different, rad crossmember and mounting is different,77-72 axles are wider, crossmembers are different and the legality of changing frames
. it would be easier to convert your existing frame over to 4 whk dr.. the difference other than the obvious is that the 4 x 4 frame is 2" deeper under the body section.
I imagine that it will be a pavement queen , just for the looks of a 4 x 4 anyway. these trucks are getting to old to really be used that physically still.. not bashing , just being realistic as not that many of 4 x 4 s really get off road work
ron