I just got done doing just what you need to do, but also replaced the thermostat, water pump, and valve cover gasket. The most difficult thing I ran into was the tranny lines, the lower one on the radiator would not come off, ended up replacing that line, as well as both connectors on the tranny. I went with Dorman lines, which did not fit, so ultimately ended up with dealer lines. The CSF three row I picked up locally for $200 fit perfectly. All in all the radiator is simple to do, and if you are replacing hoses, that makes it even easier since you just cut the hoses off. I used Felpro gaskets for the thermostat, as well as the water pump, installed dry as the FSM said, with the silicone bead out, and not one leak. If you do the thermostat, clean up the housing and block very well, I used lots of acetone, and a gasket scraper. Ended up using a dremel to clean up the block where the water pump was, that old gasket was on really good. Also, if you have a nipple on the drain of the new radiator, fit a piece of 5/16" X 2' hose on there, clamp, and run down and ziptie behind the bumper, it will make coolant flushes make less messy in the future. One more tip, I found the Proliance radiators from NAPA to be crap, ended up returning the one I originally got, the CSF looks/fits just like stock.
Eric