I just put in a stock replacement 3-row and it fits great. The fan shroud and overflow tank bolted up fine, but I may have had to leave off one of the fan shroud mounting bolts, I don't recall for sure.
Also one of the clamps that bolts down over the top of the tank doesn't sit down quite as low as it did on the stock radiator, and runs into the hood insulation a little bit, so I have to shut the hood a little harder.
But overall, yeah, a stock replacement 3-row will fit great.
Jeff