nova, I think those will fit the 88-98 3/4 tons but I'm not sure if the hub cutout is the same size. My hunch is yes.
Jeff, I don't think there were any factory aluminum wheels for 8-lugs in those years. The ones you're thinking of are 6-lug, I think. Your '95 is a half-ton 4wd, right? I think your dad will have to buy aftermarket to get aluminum wheels for his 8-lugger.