To add to what Jim has said, I would also add an overflow tank. I also concur that using a 5 blade regular fan is superior to an electric fan because the electric will put pressure on the amperage needed to run it, so you would have to do some upgrades to your electric system. I have the 4 row rad, 5 blade fan, shroud, and overflow tank and my 65 289 runs cool as a cucumber with kthe air on. I also run a 180 degree cap. I flush my system once a year in the spring and do not use any acid based cleaner. Just plain water.