VISTEON makes a great radiator for a stock replacement as they made the OEM radiators. SPECTRA seems to be teh one that all of the aftermarket is going to now though, and I have seen a pretty high failure rate in them. I paid for a VISTEON from CARQUEST, but got a SPECTRA as they had changed vendors and could no longer get VISTEON even though the computer still showed it. I hope it holds up. GRIFFIN makes an AWESOME radiator as well as BE COOL, but I don't think they make a drop in replacement for the 6.5 trucks(and you will pay DEARLY for one). If your in Fl I still have an OEM radiator that had less than 5K miles on it since I replaced it before I did my engine swap.