the rear axles are the only ones that will need the perches moved, and that is only on '73 and up 3/4 tons. the 1 tons are the same width as ours.
oh, and i didnt use a gun to get my d60 for $150. but for some reason, the same jy guy that wants $1600 for a running 454 and $25 for a mirror head only wanted $200 for the d60, and i talked it down to $150
but it needs a TOTAL rebuild.