Howdy! I have recored my original radiator over 10 years ago, and it has worked great ever since. The new cores are higher density and that gives them 50 - 100 % more cooling ability than original. I have also done several other things, as I run in the desert when it is 115+ out. I was limited to a 15" fan due to the position of the lower radiator hose outlet. I had it moved to the bottom of the tank with a 90 degree turn on it. I am currently running a 19" fan, solid, 6 blade like an old stocker, but no clutch as the fan is too close to the radiator. I am running truck pulleys on the engine. Bigger crank pulley and smaller water pump pulley makes it run about 30% faster. Alternator is faster too, so lots of juice for driving lights when the engine is just idling. Also, I run a FlowCooler water pump. I highly recommend these as the single most effective upgrade I have done. Less than 1/2 the $$$ of the fancy brands. I run a 180 degree t-stat because when I run a 160 the engine never warms up when the temp is in the 40's. John
P.S. I tried a big electric pusher fan, but it didn't do much good. I also am not running any kind of shroud, but I would recommend that you do run one, as I am just lucky!!