[Bart Carter]

Everyone is correct on the shroud and the choice of a Taurus fan.

I will add to check your pulley ratios. For the street, you want a 1 : 1.3 ratio of crank pulley to water pump pulley. You need to move more water at a faster rate through the radiator. You will not miss that 3 HP at high RPM.

Also, a properly installed surge tank (not an overflow tank) will purge the system of all air and provide a cushion of air to be a shock absorber for pressure surges.