Yes 4wd rad is 99% same, at least on pattern ones, no differenc eis mentioned and same part number.
All sierra co rad fans the same.
4wd i/cooler will just bolt on, but one bobbin on the underside of the i/cooler will not be in line with the hole in the top edge lip of the rad, although would imagine as this is different on 2wd and 4wd spacing is further apart on 4wd as cooler is slightly longer higher thicker, but nothing that can't easily be got around anyway.
tabetha