I think it was CSF that made an all aluminum radiator for these trucks..Don't know if they are still available though.... That said, the stock radiator lasted how long? And did the job......

 

The radiator on the right I got as a replacement for the leaking original. This thing would not keep my truck cool! Years later it started leaking and got another(free, replacement has a lifetime warranty) on the left. One on the right has more space between the tubes because it has LESS OF THEM. Old has 46 tubes and new has 48. I still am searching for what a oem radiator has. I didn't count the one had. If you get a replacement keep this in mind. I would guess the oem radiator probably had about 50. The one I have now(48 row) does OK but still struggles in traffic with the AC on high and 100* out.