After looking for some time for a replacement with out any luck, and considering the sad shape my radiator tanks were in, along with the expense (300 if they could use my tanks and patch them up), I decided to go another route. Doing the research, it was obvious there was not a readily available inexpensive aluminum aftermarket radiator that was a plug and play, I came up with this one. It was priced right and seems to be well constructed. Three row, suitable for my needs (cummins 4bt).
http://www.ebay.com/itm/261265461938?ss ... 1439.l2649
I did away with the water pump mounted fan, shroud and adapted a Taurus Fan (electric). The replacement radiator is for a mid 70s CJ v8 and is about 3/4 of an inch narrower than the stock Gladiator, height was 1/2 inch taller. Also the aluminum replacement was ~1/2 inch thicker. Mods were simple, a flat piece of 1/8 steel, 4 holes in the steel adapter and two extra holes in the other side of the radiator and I was in business. Here is the result. After driving it for a few days its cooling better than expected, the temp has yet to break 175 without the fan. and going up a long steep hill. Next summer will be the discriminator.